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Improving wear and corrosion resistance of U71Mn rail steel subjected to laser in-situ fabrication of Fe based Cr–V coatings Wear (IF 5.0) Pub Date : 2024-03-11 Yuling Yang, Yingxin Xin, Hongnan Chen, Zhenyu Liu, Bo Wang, Hongchao Qiao, Erlin Zhang
With purpose of improving wear and corrosion resistance of U71Mn railroad switch, Fe based Cr–V coating was designed and in-situ fabricated on the surface of U71Mn rail steel using laser alloying technology. The phase constituents, effect of V content on the grain size, the microstructure, wear and corrosion resistance were investigated. Grain size refinement effect was observed due to more content
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Low and high temperature effects on friction and wear performance of Cr-plated cylinder liner Wear (IF 5.0) Pub Date : 2024-03-11 Zukai Zhao, Yan Shen, Ye Liu, Chuanfei Xing, Jie Liu, Junjing Fan, Jiujun Xu
Cr-plated cylinder liners with good wear and corrosion resistance as well as high strength are suitable for application in low-carbon fuel engines. A reciprocating friction and wear tester was used to measure the friction and wear performance of the Mo-sprayed piston ring and Cr-plated cylinder liner at low and high temperatures. For the low temperature conditions from −20 °C to 20 °C, the worn surface
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Quantitative prediction of wear failure based on dissipative methodology under dry friction Wear (IF 5.0) Pub Date : 2024-03-09 Haoran Liao, Ying Liu, Hongju Li, Xiang Zhao
The evaluation and prediction on failure of friction pair are important for improving equipment reliability and life span. In engineering practice, researchers often determine the severe-wear stage by monitoring changes in wear and the friction coefficient. However, existing criteria for evaluating the wear process are nebulous, leading to the ambiguous relationship between the measured parameters
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Influence of different wet-blasting pressure on the surface integrity and tool cutting performance of hybrid CVD-TiN/TiCN/α-Al2O3/TiN coated tools Wear (IF 5.0) Pub Date : 2024-03-09 Han Chen, Yongguo Wang, Jianliang Jiao, Chang'an Zhou, Zhuopeng Tan, Zhiqiang Zhong, Lirong Huang, Yong Peng
This paper investigates the effect of wet-blasting pressure on the surface integrity and tool cutting performance of hybrid CVD-TiN/TiCN/α-AlO/TiN coated tools. The hybrid TiN/MT-TiCN/α-AlO/TiN multilayer coating was deposited on the cemented carbide inserts’ surface by chemical vapor deposition (CVD) technique. Then the coated inserts were subjected to wet-blasting by aluminum oxide with varying pressure
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Effect of boron addition on the microstructure and wear resistance of laser beam directed energy deposited high chromium white irons Wear (IF 5.0) Pub Date : 2024-03-09 Chengbo Zhu, Ian Fordyce, Shi D. Sun, Murugesan Annasamy, Daniel Fabijanic, Ken Short, Anna Paradowska, Martin Leary, Milan Brandt, Mark Easton
There is a demand for alloys produced by laser beam directed laser deposition (DED-LB) with better wear resistance than the traditionally manufactured alloys. In DED-LB of high chromium white iron (HCWI), the refined carbides lead to inferior wear performance than the cast alloy of the same composition. In this study, various concentrations of FeB powder were mixed with HCWI powder and produced by
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Effect of HVOF spray coating on the tribological surface of onshore gate valves Wear (IF 5.0) Pub Date : 2024-03-08 Diógenes Barbosa Teles, Victor Velho de Castro, Mariana dos Reis Tagliari, André João de Souza, Célia de Fraga Malfatti
Gate valve is one of the most common design concepts in onshore Oil & Gas installations. This equipment is composed of a wedge-shaped obturator that performs linear sliding movements during activation. Fluid sealing is achieved through metallic contact between the surfaces of the gate and seat components. Metal surfaces are commonly hardened by heat treatment or coated with Stellite 6 alloy by plasma-transferred
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Influence of HAZ microstructure on RCF under twin-disc test of a flash-butt welded rail Wear (IF 5.0) Pub Date : 2024-03-07 Henrique Boschetti Pereira, Edwan Anderson Ariza Echeverri, Luiz Henrique Dias Alves, Kazim Yildirimli, Roger Lewis, Hélio Goldenstein
A new twin-disc test was performed using discs containing all microstructures of the heat-affected zone (HAZ) of flash-butt welded rails. It was observed that the lower hardness regions (spheroidized cementite in a ferritic matrix) at the HAZ boundary underwent a local deformation, generating valleys and reproducing a common defect type observed in rail welds: double squat-like defect. Longer crack
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Rolling–sliding wear and damage behaviors of 304L stainless steel laser cladding on a damaged wheel tread under high ambient temperature conditions Wear (IF 5.0) Pub Date : 2024-03-07 Chenggang He, Gang Zou, Haiqiao Liu, Xinji Wang, Yixun Xu, Jihua Liu, Siuming Lo
To prolong the service life of wheels, damage to wheel tread was repaired locally by laser cladding. However, wheels in service in open environments are subject to high ambient temperatures, especially in the southern coastal areas of China, and the repair effects have not yet been verified. Therefore, in this study, laser cladding was used to clad 304L stainless steel powder on a damaged wheel tread
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Improving surface finish and wear resistance of electroless nickel plating using flexible abrasive tool Wear (IF 5.0) Pub Date : 2024-03-07 Mayank Kumar, Ajay Sidpara, Vikranth Racherla
Electroless nickel plating has a variety of useful properties, including high hardness, high stability, and better corrosion and wear resistance when compared with the stainless steel substrate used in the present work, which make it useful in different fields such as aerospace, optics, defence, etc. However, these applications require very high level of surface finish. This work presents the finishing
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A frequency-domain simulation method for the evolution of rail corrugation in curves Wear (IF 5.0) Pub Date : 2024-03-07 Gong Cheng, Qingjie Liu, Xinsheng Lai, David J. Thompson, Qingsong Feng, Xiaoyan Lei
Rail corrugation remains a major problem in many railways and metros, leading to high noise and vibration levels as well as potential damage to the track and vehicle. A frequency domain simulation method is proposed for the evolution of the rail surface roughness, which can simulate the formation and development of rail corrugation in curves. A coupled vehicle-track dynamic model is established in
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Hardfacing of thermite welded rail by flux-cored arc welding Wear (IF 5.0) Pub Date : 2024-03-07 Hein Zaw Oo, Prapas Muangjunburee
The surface defects on the service railway's thermite weld must be repaired. Repairing procedures of thermite weld surface defects should be cost-effective, safe, and easy in the field. Hardfacing is the most effective method for restoring thermite-welded rail head. Four conditions were investigated using two types of hardfacing alloys under different shielded gases during the FCAW process: single
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The development of wear characteristics of the picking spindle hook teeth based on the discrete element method Wear (IF 5.0) Pub Date : 2024-03-07 Chengcheng Zhang, Xiuqing Fu, Anhua Ren, Yaoheng Liu, Jinran Lin, Hongwen Zhang, Zhiwen Jin, Fei Li, Xingyu Wang, Xuanwei Zhang
In this study, samples of worn spindle hook teeth were collected under different field working times to investigate their loss of ability to pick seed cotton owing to wear failure of the geometric structure. The wear characteristics of the surface of the hook teeth were tested and analyzed, and the development process of the wear region and the average value of the wear depth were obtained. This research
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Wear performance of Ni-WC composites and heat-damage behaviour of WC particle during vacuum-induction melting process Wear (IF 5.0) Pub Date : 2024-03-07 Kuangxin Luo, Hao Ma, Jiayi He, Jing Lu, Jiayi He, Ning Wu, Chang Li, Yimin Li, Fenghua Luo
Ni-WC composites were prepared by vacuum-induction melting (VIM). A ball-on-disc wear test was performed using an SiN ball as a friction pair to study the wear performance of the composites. The effects of WC particle size (average particle size of 68 μm and 23 μm) on the mechanical properties of the composites and the heat-damage behaviour of WC particles during the melting process were investigated
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Wear behavior of HVOF sprayed cobalt-based composite coatings reinforced with Cr3C2 Wear (IF 5.0) Pub Date : 2024-03-02 Alejandra Islas Encalada, Sima A. Alidokht, Navid Sharifi, Pantcho Stoyanov, Mary Makowiec, Christian Moreau, Richard R. Chromik
Metal matrix composites are widely used to improve the wear resistance of materials, and, among these composites, WC-Co and CrC-NiCr (metallic binders) are the most common systems used for thermally sprayed applications. On the other hand, metallic coatings such as cobalt-based alloys are also used for high temperature and wear resistant applications. Among the cobalt-based alloys, Stellite-6 shows
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Fretting fatigue tests on 6201-T81 aluminum alloy conductor wires at room temperature and 75 °C Wear (IF 5.0) Pub Date : 2024-03-01 Miguel A. Garcia, Remy Kalombo Badibanga, José Alexander Araújo, Jorge L.A. Ferreira, Cosme Roberto Moreira da Silva
The aim of this work was to conduct a test campaign to investigate the effect of temperature on the fretting fatigue life of aluminum alloy 6201-T81 wires taken from All Aluminum Alloy Conductors (AAAC) 900 MCM. To this end, fretting fatigue tests were conducted at room temperature (25 °C) and 75 °C. A three actuators fretting fatigue rig was upgraded with a heating system to allow the tests at elevated
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Plasma nitrided 65Mn steel: Microstructure, tribocorrosion and electrochemical properties and DFT calculation Wear (IF 5.0) Pub Date : 2024-02-29 Yuling Lu, Yuxing Peng, Zhiyuan Shi
To improve the nitrogen-expanded crystalline structure, tribological and anti-corrosion properties in industrial field, nitrogen atoms were incorporated into 65Mn steel by plasma nitriding. In this study, 65Mn steel was processed using a plasma nitriding method at 600 °C for the improvement of tribocorrosion resistance. The structural evolutions, chemical elements and chemical bonds of obtained nitrided
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A study on improving friction and wear performance of bearing bush in radial piston hydraulic motor Wear (IF 5.0) Pub Date : 2024-02-29 Ying Li, Xueshi Cui, Jin Zhang
The radial piston hydraulic motor is widely used due to its ability to provide high torque output and stable speed control. However, it exhibits poor lubrication performance in low-speed, heavy-load conditions. Specifically, the friction and wear performance of the piston-roller friction pair directly affect the motor's starting torque, operational efficiency, and service life. To address the friction
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Wear particle matter emission of rubber reinforced by graphene and carbon nanotube hybrid fillers against a rolling-contact concrete surface Wear (IF 5.0) Pub Date : 2024-02-28 Junhao Qu, Ruilin Wang, Feihong Huang, Haibo Huang, Rui Ren, Yanjun Wang, Yan Ding, Yonggang Wang
Rubber reinforced by nanofillers has high mechanical and frictional properties and has been considered a promising tire material for future applications. However, due to its potential environmental risks, particulate matter emission induced by the wear of this tire material should be evaluated. In this study, the wear particulate matter (WPM) induced by tire rubber reinforced by graphene (Gra) and
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Rolling contact fatigue studies on AISI 4140 steel under formulated lubrication conditions with nano graphene additives Wear (IF 5.0) Pub Date : 2024-02-27 M.R. Ranju, P.M. Abhilash, D. Kesavan
This investigation primarily intends to formulate a graphene nano lubricant with various concentrations of graphene additive, then experimentally assess and compare their impact on rolling contact fatigue (RCF) performance of AISI 4140 steel under pure rolling conditions. After formulation, various other parameters including kinematic viscosity, dispersion stability, aggregation behaviour, and thermal
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Synergistic mechanism of the fretting wear resistance of Fe2O3/Ag nanostructured coatings prepared by sliding friction and magnetron sputtering Wear (IF 5.0) Pub Date : 2024-02-27 Xichang Shang, Yilong Liang, Peng Wang, Yuzhong Wu
The synergistic effect of the hard/soft phases of a material is potentially valuable and significant for improving wear resistance. Given this, a method for preparing FeO/Ag nanostructured coatings, in which reciprocating sliding friction is used to prepare nano-FeO coatings and magnetron sputtering is used to prepare nano-Ag coatings, is proposed. The fretting wear test using a SiC ball as the friction
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Orientation-dependent plastic flow in nanoscratching of copper surfaces Wear (IF 5.0) Pub Date : 2024-02-26 Weili Liu, Beibei Jiang, Qing Lin, Shilei Wu, Ran Yang, Zhanfeng Wang
The characterization of frictional behavior in ductile metals is a crucial aspect of materials science, as it relates to the plastic deformation of the material. However, due to the intricate dislocation evolution at the submicron/nanometer scale, the isolation of the basic plastic mechanisms remains challenging. In this study, nanoscratching technology is employed to investigate submicron/nanometer-level
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Investigating the load and temperature-dependent dry sliding wear performance of Al–12Ce alloys with Si and Mg additions Wear (IF 5.0) Pub Date : 2024-02-25 Rahul Gope, Dheeraj K. Saini, Sourav Ganguly, Animesh Mandal
The current study investigates the effect of load and temperature on the wear characteristics of gravity-cast Al–12Ce, Al–12Ce-X alloys (where X = 4Si, 0.4Mg, and 4Si+0.4Mg), and commercial A356 alloys at 5, 10, and 20 N; and at 25, 100, and 200 °C newly fabricated for diesel engine applications. The addition of 4Si and 0.4Mg increased the Al–12Ce alloy's hardness and decreased the volumetric wear
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Interaction of erosion and corrosion on high-strength steels used for marine dredging engineering Wear (IF 5.0) Pub Date : 2024-02-20 Yunze Xu, Qiliang Zhang, Wubin Ren, Menghu Wang, Hao Chen, Xiaohui Zou, Xinjun Sun, Yi Huang
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Effect of squamous textured SiC on the dry-sliding tribological properties of graphite asperities Wear (IF 5.0) Pub Date : 2024-02-16 Na Zhang, Xianghua Zhan, Zhentao Li, Yancong Liu, Jian Ma, Jindong Gao
The graphite rough morphology influences the operating performance of the sealing surface. Texturing silicon carbide surfaces can considerably improve the tribological characteristics of sealing surface. Herein, a fractal model was established to study the contact and tribological characteristics of graphite asperities, and the pin-on-disk wear tests were conducted to investigate the influence of squamous
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Study on the wheel/rail adhesion characteristic under water and oil conditions by using mixed lubrication model Wear (IF 5.0) Pub Date : 2024-02-16 Xiaopeng Wang, Hongpeng Hua, Kun Peng, Biqiong Wu, Zhengyang Tang
During train operation, water, oil, or oil-water mixtures may adhere to the wheel/rail contact interface, thereby altering the adhesion between the wheel and the rail. In order to study the adhesion characteristics of wheel/rail under wet conditions, a deterministic mixed lubrication model considering surface roughness and transient state is established in this paper, in which the quasi-system numerical
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The role of Si on the structure and tribological properties of a-C:H:Ni soft films at elevated temperatures Wear (IF 5.0) Pub Date : 2024-02-15 Yanxia Wu, Xu Jiang, Bang Shi, Ke Li, Ying Liu, Shengwang Yu, Bing Zhou, Ke Zheng
Si was doped into a-C:H:Ni film by radio frequency magnetron sputtering to improve its tribological properties at elevated temperatures from 25 to 300 °C. The structure, morphology, mechanical and tribological properties were investigated. The results showed that doped Si facilitated sp-to-sp rehybridization, decreased H content, improved hardness, adhesion strength, higher structural stability and
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Ultrasonic cavitation erosion of CFRP composites Wear (IF 5.0) Pub Date : 2024-02-15 Leon Chernin, Raimondas Guobys, Margi Vilnay
To date, cavitation erosion of carbon fibre reinforced polymer (CFRP) composites has attracted only limited scientific attention. This paper investigates this knowledge gap through a series of experiments, in which unidirectional and bidirectional (2x2 twill) CFRP composites were exposed to cavitation clouds produced by an ultrasonic transducer in distilled water. Both composites were bonded with epoxy
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Friction and wear behavior of molybdenum-disulfide doped hydrogen-free diamond-like carbon films sliding against Al2O3 balls at elevated temperature Wear (IF 5.0) Pub Date : 2024-02-14 Yanjun Chen, Haichao Li, Fenghua Su, Guozheng Ma, Qiang Li, Jianfang Sun, Songsheng Lin
Diamond-like carbon (DLC) films quickly experience lubrication failure due to oxidation and mechanical degradation when used above 300 °C, which limits their application. Molybdenum disulfide (MoS) doping is considered as a feasible method to improve high-temperature properties of DLC films. However, the effect of MoS doping on the high-temperature friction behavior of MoS-DLC composite films and its
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The effects of initial and in-situ generated roughness on polymer wear: Voluntary vs. involuntary Wear (IF 5.0) Pub Date : 2024-02-13 Kaisen Zhang, Kun Liu, Tianyan Gao, Xiaojun Liu, Jiaxin Ye
Polymer wear against a metal surface depends on both the , pre-defined roughness and the , generated roughness by the polymer wear. Using highly defined roughness manufactured on stainless counterfaces with laser-surface-texturing (LST), a new roughness directionality parameter (), two established ultralow wear polymers (5 wt% α-AlO−PTFE and 20 wt% PEEK-PTFE), reciprocating pin-on-flat tribometry and
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Effect of internal and external damping in the reduction of non-exhaust particulate matter emissions in a low metallic friction material formulation Wear (IF 5.0) Pub Date : 2024-02-12 Priyadarshini Jayashree, Giulia Fredi, Emiliano Rustighi, Ana Paula Gomes Nogueira, Giovanni Straffelini
Friction-induced vibrations in an automotive braking system are of serious concern, leading to different repercussions. Numerous conventional and unconventional methods have been proposed to curb these vibrations, which are also observed to be directly related to generating non-exhaust particulate matter emissions. In this study, an in-house formulated friction material, tested in the form of pins
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Review of various influencing factors and improvement measures on wheel-rail adhesion Wear (IF 5.0) Pub Date : 2024-02-11 Hua Chen
The wheel-rail adhesion characteristics are very important for the safe and stable operation of vehicles. This railway-specific problem has been studied since the beginning of the construction of railway systems. Most studies have focused on various factors influencing this adhesion and quantifying the extent of their influence so far. This paper reviews current experimental and theoretical studies
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Reciprocating sliding friction behavior and wear state transition mechanism of cylinder liner and piston ring Wear (IF 5.0) Pub Date : 2024-02-08 Baofeng Zhang, Xuan Ma, Lining Liu, Yongqiang Wang, Hanzhengnan Yu, Ardian Morina, Xiqun Lu
To investigate the wear time-varying characteristics of cylinder liner cast iron, dry sliding wear experiments were conducted on the cylinder liner and piston ring at room temperature. The surface and interface morphologies of the cylinder liner wear scar were analyzed using a white light interferometer, scanning electron microscope (SEM), and transmission electron microscope (TEM) at different wear
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Cavitation erosion in suspensions containing sediment and NaCl for cement paste and mortar Wear (IF 5.0) Pub Date : 2024-02-07 Wenjuan Gou, Yan Hu, Hui Zhang
Synergistic erosion caused by cavitation, abrasion and corrosion is a common issue for hydraulic and marine structures in rivers and oceans with high concentrations of sediments. Erosive experiments using a vibratory apparatus and a stirring apparatus, are performed on cement paste and mortar subjected to tap water, sediment suspensions (0.01–0.1-mm sizes and 30–150-kg/m concentrations), and sodium
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Tyre wear model: A fusion of rubber viscoelasticity, road roughness, and thermodynamic state Wear (IF 5.0) Pub Date : 2024-02-06 Aleksandr Sakhnevych, Andrea Genovese
Wear is due to many causes and involves three major consequences: loss of performance, loss of security and environmental pollution. Depending on the context, the focus on the consequence can be moved: in motorsport tyre’s fundamental role is to guarantee high performance as long as it is possible, in road vehicles safety has decisive importance compared to the safety target, in big densely-populated
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Discrete element modelling of rolling contact fatigue and crack closure with different bond laws Wear (IF 5.0) Pub Date : 2024-02-06 Markus Januschewsky, Gerald Trummer, Klaus Six, Roger Lewis
The prediction of rolling contact fatigue requires modelling methods that efficiently simulate the propagation, branching and coalescence of fatigue cracks. The developed Discrete Element Method (DEM) model is a novel approach to provide this capability. The model is based on discrete elements (bonds) that are subject to a fatigue law. With it, the failure of elements due to cyclic loads can be simulated
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High temperature wear behavior of nanodiamond reinforced nickel-aluminum composite coatings Wear (IF 5.0) Pub Date : 2024-02-05 Shubhendra Shivam Maurya, Abhishek Kumar Grain, Rahul Kumar, Aminul Islam, Anup Kumar Keshri
In recent times, high temperature operated coatings are becoming popular as they offer protection against both elevated as well as harsh environment to improve wear performance. Herein, we investigated and demonstrated an in-situ high-temperature wear behaviour over nanodiamond reinforced nickel-aluminium composite coatings up to 873K. The composite coating offered a substantial reduction in wear rate
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Generation of sanded creep curves using the extended creep force model with high pressure torsion data Wear (IF 5.0) Pub Date : 2024-01-28 W. Skipper, A. Meierhofer, A. Chalisey, K. Six, R. Lewis
In this paper an approach for generating predicted full-scale creep force – creep curves from small-scale tribological tests has been outlined and examples produced using rail sands and low adhesion contaminants. A high pressure torsion rig was used to measure the change in shear stress over increasing displacement for British and Austrian rail sands in dry, wet, and leaf contaminated conditions under
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Numerical simulation on the effect of current intensity on electrical contact performance of electrical connectors subject to micro-slip wear Wear (IF 5.0) Pub Date : 2024-02-01 Wenxin He, Yu Feng, Shaolei Wu, Kai Wu, Jiaxin Ye, Wei Wang
This article aims to develop a wear simulation method considering thermal-electrical- mechanical coupling to obtain the evolutions of contact variables and electrical resistance. Then, the influence mechanism of current intensity on the electrical contact performance subject to micro-slip wear is revealed. The maximum wear depth exhibits an increasing and then decreasing trend with the electric current
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Investigation of the impact of AISI D2 tool steel wear and lubrication type on the evolution of the friction coefficient during cold winding process Wear (IF 5.0) Pub Date : 2024-02-01 Hans Boungomba, Philippe Moreau, Tarik Sadat, Lola Lilensten, Mirentxu Dubar, Laurent Dubar
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Regional morphological difference and evolution of tread rubber and its formation mechanism under high-speed sliding friction Wear (IF 5.0) Pub Date : 2024-02-01 Fei Teng, Jian Wu, Benlong Su, Youshan Wang
The tribological behaviors of tread rubber were gradually changed by the worn surface morphologies during friction. The high-speed sliding friction test was conducted by self-developed friction apparatus to investigate the tribological behaviors of the tread rubber. The fan-shaped rubber specimen was tangent to a grinding wheel to simulate the tread-road contact. A clear abrasion pattern can be observed
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Frictional and wear behaviors of short carbon fiber reinforced polyetherimide composites in an oil lubricant environment Wear (IF 5.0) Pub Date : 2024-02-01 Yuan-Yuan Zhang, Bo-Wen Guan, Shi-Wei Liang, Quan-Xiu Liu, Yuan-Qing Li, Shao-Yun Fu
Tribological performances of short carbon fiber reinforced polyetherimide (SCF/PEI) composites in an oil lubricant environment are of significance for relevant applications but have not been reported yet. In the present work, the friction and wear behavior of the SCF/PEI composite in oil-lubricated conditions is investigated systematically with a pin-on-disc test rig (a polymer pin sliding against
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Detector response from a defective wheel Wear (IF 5.0) Pub Date : 2024-01-30 Matthias Asplund, Pär Söderström
This paper deals with field validation of the force response from a defective wheel after normal service. The defective wheel represents a typical defect arising from normal winter operation in a cold climate. The current detector is a typical wheel load impact detector that has been in use for about fifteen years; this type of detector is widely used in the infrastructure. The wheel has defects of
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A life-cycle dynamic wear degradation model of planetary gear systems Wear (IF 5.0) Pub Date : 2024-01-30 Yifan Huangfu, Xingjian Dong, Yixiang Cao, Zhanwei Li, Zhike Peng, Yongtao Sun
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Recovery of metal matrix composite drilling tools using a WC-Ni/Cr TIG-hardfacing technology Wear (IF 5.0) Pub Date : 2024-01-26 Malek Hebib, Lilia Choukrane, Billel Cheniti, Lotfi Faghi, Alexandra Kovalčíková, Hamida Bouchafaa, Bouzid Maamache, Tamás Csanádi, Pavol Hvizdoš
The recovery of worn and damaged drilling tools in oil and petroleum industries, which no longer meet reliable technological use, could significantly reduce the drilling cost and, therefore, the emission of toxic materials. The present study demonstrates first time an innovative solution for this problem using a WC-Ni/Cr Tungsten Inert Gas (TIG) hardfacing technology by which a damaged WC-based metal
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An optimised grinding target profile considering long-term service performance: A case study of no. 18 high-speed turnout Wear (IF 5.0) Pub Date : 2024-01-29 Jiasheng Fang, Rong Chen, Jingmang Xu, Ping Wang
The design of rail grinding profiles for turnout has always been a significant subject of research. This paper proposes a rail grinding target profile design method that can improve the serviceability of turnout. Firstly, the high-speed turnout rail profile was parameterised by non-uniform rational B-spline (NURBS), with the amount of key section control point grinding used as a design variable. Secondly
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Exploring the tribochemical wear and material transfer caused by Cu15Zn alloys on shearing tools Wear (IF 5.0) Pub Date : 2024-01-29 J. Heinrichs Lindgren, H. Mikado, O. Donzel-Gargand, K.B. Surreddi, U. Wiklund, S. Kawamura, S. Jacobson
Cemented carbide tools are extensively used in the zipper industry, including shearing of a pre-formed Cu15Zn wire into individual zipper elements. Although the work material is significantly softer than the tool, wear is the life limiting factor for the tools and is considered to be of tribochemical nature. So far it has not been explained, however, it is known that the wear rate of uncoated, as well
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Correlation between microstructure, mechanical properties, and slurry erosion behavior of hot-rolled dual-phase steel Wear (IF 5.0) Pub Date : 2024-01-24 Ye Jia, Xiangtao Deng, Qi Wang, Chengru Li, Zhaodong Wang
A low alloy dual-phase steel was produced via a thermo-mechanical control process to improve production efficiency and reduce costs. The study investigates the influence of martensite volume fractions on the mechanical properties and slurry erosion behavior of the hot-rolled dual-phase steel, and the correlation between the mechanical properties and slurry erosion behavior was revealed to provide insights
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Three-dimensional elastic–plastic stress analysis of wheel–rail cyclic rolling contact using finite element method Wear (IF 5.0) Pub Date : 2024-01-28 Zhijun Zhou, Wei Li, Zefeng Wen, Shenglu Zhou, Gongquan Tao
The rail is subjected to cyclic stress and plastic deformation, excessive accumulation of which can promote rail degradation. A finite element (FE) model of three-dimensional (3D) cyclic rolling contact (CRC) with the implementation of an improved cyclic plasticity constitutive material model is developed to analyze the 3D elastic–plastic stress. Comparisons of the FE simulation results of 2D repeated
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Effects of displacement amplitude and normal force on fretting wear behavior of zirconium alloy tube in simulated primary water of PWR Wear (IF 5.0) Pub Date : 2024-01-26 Yusheng Zhang, Bin Wu, Hongliang Ming, Jiazhen Wang, Jianqiu Wang, En-Hou Han
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Tribo-thermo-electrical investigation on lubricating grease enriched with graphene nano-platelets as an additive Wear (IF 5.0) Pub Date : 2024-01-27 Edoardo Goti, Luca Corsaro, Francesca Maria Curà
Many efforts are being made in recent years to boost the performance of traditional lubricants with innovative nano-additive, like graphene. In this paper, long-term lubricated pin-on-disc tests were performed with four grease compounds filled with 0.5 %–5 % graphene nano-platelets. Severe contact conditions were explored to investigate the impact of graphene on the performance and thermal properties
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Tailored carburization gradient microstructure and enhanced wear properties of M50NiL steel via introduced prior cold rolling Wear (IF 5.0) Pub Date : 2024-01-22 Dongsheng Qian, Lingyan Wu, Feng Wang, Song Deng, Fei Yin, Shaofeng Jiang
M50NiL (Chinese grade G13Cr4Mo4Ni4V) steel is widely used in aircraft bearing raceways that require excellent wear resistance under harsh service conditions. However, the impact of cold rolling, as an advanced forming process for bearings, on the carburization process and wear properties is still unknown. Therefore, the gradient microstructure and dry sliding wear performance of the cold-rolled M50NiL
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Hand operated tribometer versus twin disc dry friction characteristics measurements Wear (IF 5.0) Pub Date : 2024-01-20 Esteban Bernal, Maksym Spiryagin, Kevin Oldknow, Qing Wu, Mohammad Rahaman, Diego Camacho, Chris Bosomworth, Sanjar Ahmad, Colin Cole, Tim McSweeney
Accurate friction-slip modelling is particularly important for locomotive traction and rail damage studies. This paper compares friction-slip measurement results from a hand operated (HO) tribometer and a twin disc tribomachine on AS60 rail. The results were used to calibrate traction coefficient-slip curves using the Modified Fastsim contact model. The differences between the two friction measuring
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Wear behavior of MIG manufactured 12Cr-xC (x=0.3, 0.4) hardfacings under different temperatures and loads Wear (IF 5.0) Pub Date : 2024-01-24 Yongcun Li, Wenjun Zhu, Jianjun Zhou, Chengrong Mao, Yong Wang, Sheng Gao
Metal inert gas (MIG) hardfacing technology has developed high-performance materials on carbon steel, which exhibit superior thermal wear resistance linked to Cr and C contents. In this study, the 12Cr-xC (x = 0.3, 0.4) hardfacings were manufactured by the MIG method, and the corresponding wear behavior on different loads and temperatures was characterized. The results revealed that the 12Cr-xC hardfacings
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Experimental investigation of high-speed wheel-rail adhesion characteristics under large creepage and water conditions Wear (IF 5.0) Pub Date : 2024-01-19 Chongyi Chang, Bo Chen, Yuanwu Cai, Junbiao Wang
With the increase of train operational speed, the wheel-rail adhesion will behave differently. This behavior will directly affect the utilization of wheel-rail adhesion during traction and braking. Typical rainy and snowy weather will cause the wheel-rail low adhesion problem. Correspondingly, the wheel sliding can happen and causes wheel burns on both the wheel and rail contact surfaces. Besides,
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High-temperature dry sliding wear behavior of additively manufactured austenitic stainless steel (316L) Wear (IF 5.0) Pub Date : 2024-01-18 Vineesh Vishnu, T. Ram Prabhu, Murshid Imam, K.P. Vineesh
Austenitic steels are commonly used in aero-engine components owing to their higher thermal resistance to wear and corrosion. This study investigates the high-temperature dry sliding wear behavior of direct metal laser-sintered (DMLS) austenitic stainless steel (SS 316L) up to 400 °C. A dry sliding reciprocating wear test conducted on a high-frequency tribometer with a ball-on-flat setup. High-hardness
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Theoretical study on wheel wear mechanism of high-speed train under different braking modes Wear (IF 5.0) Pub Date : 2024-01-21 Hutang Sang, Jing Zeng, Qunsheng Wang, Caihong Huang, Jian Mu, Yayun Qi, Weilin Kang, Yaru Liang
The high-speed train wheel wear problem persists throughout the whole service cycle, including the traction-braking stage, constant-speed stage, acceleration and deceleration stage, and so on. This article focuses on the wheel wear of high-speed trains under various braking modes. Firstly, high-speed motor cars and trailers are created, and the two are linked by the coupler buffer device, and the former
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Influences of counterparts on the high-temperature tribological properties and glaze layer formation of pre-oxidized cobalt-based alloys Wear (IF 5.0) Pub Date : 2024-01-19 Hui Huang, Wenzhen Wang, Yu Shan, Gewen Yi, Shanhong Wan, Guimin Zhang, Xujing Du, Fengchuan Ma
The tribological behaviors, wear mechanism and formation of the glaze layer of a cobalt-base alloy dry sliding against different counterparts (Si3N4 and GCr15 steel) were investigated. Cobalt-base alloys tend to suffer from adhesive wear when GCr15 steel is used as a counter material compared to Si3N4. At 800 °C, the counter material strongly influences the formation of glaze layers on the surface
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A transient three-dimensional wheel-rail adhesion model under wet condition considering starvation and surface roughness Wear (IF 5.0) Pub Date : 2024-01-19 Bing Wu, Yuqi Yang, Guangwen Xiao
The objective of this paper is to propose a new three-dimensional wheel-rail adhesion model under wet condition which considers insufficient water supply, the measured surface roughness and dynamic effect of the vehicle and track coupling system. Firstly, a longitudinal vehicle/track coupling dynamic model (LVTDM) was developed to obtain the dynamic parameters and contact points trace in curved track