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Operative slip systems and their critical resolved shear stresses in η-Fe2Al5 investigated by micropillar compression at room temperature Int. J. Plasticity (IF 9.4) Pub Date : 2024-07-06 Zhenghao Chen, Tsukasa Horie, Xiaofeng Wang, Haruyuki Inui
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Revealing mechanism of ductility improvement of titanium thin sheet under normal stress at mesoscale from perspective of microstructure evolution Int. J. Plasticity (IF 9.4) Pub Date : 2024-07-02 Haiyang Wang, Gang Chen, Peng Zhang, Chuanjie Wang
Improving the formability of sheet metal is a constant challenge in microforming. In this study, applying normal stresses to the specimen surface is found to be an effective method for improving the ductility of pure titanium sheets. This case only occurs when the normal stress is higher than a critical value. By characterizing the microstructure, it is found that the normal stress induces a change
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Effects of intergranular deformation incompatibility on stress state and fracture initiation at grain boundary: Experiments and crystal plasticity simulations Int. J. Plasticity (IF 9.4) Pub Date : 2024-07-01 Jiawei Chen, Tsuyoshi Furushima
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Slip-discreteness-corrected strain gradient crystal plasticity (SDC-SGCP) theory Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-28 Ran Chen, Guisen Liu, Peidong Wu, Jian Wang, Lei Zhang, Yao Shen
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Effect of dynamic strain ageing on flow stress and critical strain for jerky flow in Al-Mg alloys Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-28 Surajit Samanta, Jyoti Ranjan Sahoo, Sumeet Mishra
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Unveiling the deformation micro-mechanism for mechanical anisotropy of a CoCrFeNi medium entropy alloy Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-26 Qiang Zhang, Shao-Shi Rui, Xianfeng Ma, Ligang Song, Fei Zhu, Yaowu Pei, Jiaxin Wu
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Time-resolved evolution of the deformation mechanisms in a TRIP/TWIP Fe50Mn30Co10Cr10 high entropy during tensile loading probed with synchrotron X-ray diffraction Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-24 J.G. Lopes, J. Shen, E. Maawad, P. Agrawal, N. Schell, R.S. Mishra, J.P. Oliveira
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Dynamic mechanical response and constitutive model of (Ti37.31Zr22.75Be26.39Al4.55Cu9)94Co6 high-entropy bulk metallic glass Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-23 Xianzhe Zhong, Qingming Zhang, Mingzhen Ma, Jing Xie, Mingze Wu, Jiankang Ren
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Microstructural origins of enhanced work hardening and ductility in laser powder-bed fusion 3D-printed AlCoCrFeNi2.1 eutectic high-entropy alloys Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-23 Yinuo Guo, Haijun Su, Hongliang Gao, Zhonglin Shen, Peixin Yang, Yuan Liu, Di Zhao, Zhuo Zhang, Min Guo, Xipeng Tan
Limited tensile ductility usually restricts the practical applications of new classes of high-strength materials in many industrial fields. Therefore, in-depth understanding of the work hardening behavior and its underlying plastic deformation mechanism are critical for the newly developed high-entropy alloys (HEAs). In this work, a geometric atomistic model of face-centered cubic (FCC)/ordered body-centered
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Numerical modeling of shear band effect on Goss grain recrystallization in electrical steels: Crystal plasticity finite element and phase field modeling Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-22 Kyung Mun Min, Hyukjae Lee, Hyung-Don Joo, Heung Nam Han, Myoung-Gyu Lee
This study investigates the effect of shear band evolution on the nucleation of Goss {110}<001> texture during the primary recrystallization of 3.24 wt% Si grain-oriented electrical steel. Nucleation at the early stage of primary recrystallization of the steel is explored both experimentally and numerically. The experimental approach involves cold rolling the steel specimens to obtain a thickness reduction
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Stored energy density solution for TSV-Cu structure deformation under thermal cyclic loading based on PINN Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-22 Hongjiang Qian, Jiebin Shen, Zhiyong Huang, Jian Wang, Qingyun Zhu, Zeshuai Shen, Haidong FAN
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Artificial neural network enhanced plasticity modeling and ductile fracture characterization of grade-1 commercial pure titanium Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-21 Abrar Salam Ebrahim, Qi Zhang, Jinjin Ha
This study primarily aims to develop a robust modeling approach to capture the complex material behavior of CP-Ti, appeared by high anisotropy, differential hardening due to anisotropy evolution, and flow behavior sensitive to strain rate and temperature, using artificial neural networks (ANNs). Plasticity is characterized by uniaxial tension and in-plane biaxial tension tests at temperatures of 0
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Multi-scale annealing twins generate superior ductility in an additively manufactured high-strength medium entropy alloy Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-21 Bojing Guo, Zhongsheng Yang, Qingfeng Wu, Chenbo Xu, Dingcong Cui, Yuhao Jia, Lei Wang, Junjie Li, Zhijun Wang, Xin Lin, Jincheng Wang, Feng He
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Lode-dependent anisotropic-asymmetric yield function for isotropic and anisotropic hardening of pressure-insensitive materials. Part II: Stress invariant-based coupled quadratic and non-quadratic function Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-21 Songchen Wang, Jeong Whan Yoon, Yanshan Lou
This research couples a Lode-dependent anisotropic-asymmetric (LAA) frame (Lou and Yoon, 2023. International Journal of Plasticity, 166, 103,647) with a stress-invariant-based coupled quadratic-non-quadratic (CQN) anisotropic hardening function to analytically characterize the anisotropic-asymmetric hardening of sheet metals under uniaxial tension and uniaxial compression. Experiments are conducted
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An extended gradient damage model for anisotropic fracture Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-19 Liang Xue, Ye Feng, Xiaodan Ren
This paper combines energy decomposition and an extended gradient damage (EGD) model to develop an anisotropic fracture framework with decoupling of tensile and shear cohesive laws. By introducing the shear-normal decomposition in the energy form, the driving force of the damage variable is established within the framework of the EGD model, which is then capable of capturing the traction-separation
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A rational multiscale nonlinear constitutive model for freeze–thaw rocks under triaxial compression Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-18 Wenlin Wu, Lunyang Zhao, Yuanming Lai, Zhaomin Lv, Yanyan Chen, Jiachuan Ran
The stability and durability of rocks in cold regions are significantly impacted by the degradation of mechanical properties caused by freeze–thaw (F–T) environment. In this work, we shall propose a rational multiscale nonlinear constitutive model based on thermodynamics, micromechanics, and fractional calculus theory to describe the complete deformation and failure process of F–T rocks under triaxial
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Effect of loading modes on uniaxial creep-fatigue deformation: A dislocation based viscoplastic constitutive model Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-18 Kai Song, Lianyong Xu, Lei Zhao, Yongdian Han, Ninshu Ma, Kaimeng Wang, Zhibao Ma, Yongchang Liu
A comprehensive investigation was conducted on the stress-strain responses and microstructural evolutions of 9Cr3Co3WCu martensitic steel at 650 ℃ subjected to low cycle fatigue tests, strain-controlled creep-fatigue tests (SNCFTs), and hybrid stress-strain-controlled creep-fatigue tests (HSSCFTs). The creep strain accumulation per cycle in HSSCFTs exhibited three stages: an initial decrease in the
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Double-peak strain hardening behavior of Mg–1.2 wt.%Y alloy Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-17 Bo Guan, Li Wang, Yunchang Xin, Peidong Wu, Jing Xu, Xiaoxu Huang, Qing Liu
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On the anisotropic coalescence of elliptic cylindrical voids considering the geometric and distributive properties Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-17 Jiawei Chen, Tsuyoshi Furushima
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Modeling the yield strength of nanocrystalline metals Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-16 Yanli Ma, Yi He, Jiabin Yang, Pan Dong, Ziyuan Li, Jianzuo Ma, Liming Chen, Weiguo Li
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Rediscovering the Mullins effect with deep symbolic regression Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-14 Rasul Abdusalamov, Jendrik Weise, Mikhail Itskov
The Mullins effect represents a softening phenomenon observed in rubber-like materials and soft biological tissues. It is usually accompanied by many other inelastic effects like for example residual strain and induced anisotropy. In spite of the long term research and many material models proposed in literature, accurate modeling and prediction of this complex phenomenon still remain a challenging
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High-cycle and low-cycle fatigue characteristics of multilayered dissimilar titanium alloys Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-13 Tianle Li, Wei Fan, Xifeng Li, Huiping Wu, Dayong An, Qi Hu, Jun Chen
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Unveiling the orientation sensitivity of creep life in near [001] oriented Ni-based single crystal superalloys at intermediate temperatures Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-13 Pengfei Qu, Wenchao Yang, Qiang Wang, Chen Liu, Jiarun Qin, Jun Zhang, Lin Liu
Although blades with a deviation angle of less than 15° between the blade stacking axis and the [001] orientation are qualified in the industry, the creep life of samples near [001] orientation exhibits significant anisotropy at intermediate temperatures. Those crystals having orientations within 15° from precise [001] exhibited significantly longer lives when their orientations were closer to the
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Microstructural causes and mechanisms of crack growth rate transition and fluctuation of additively manufactured titanium alloy Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-11 Xinyan Wang, Mengyu Cao, Yang Zhao, Jingjing He, Xuefei Guan
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A comprehensive analysis of cermet design and thermal cyclic stability via elasto-viscoplastic crystal plasticity modeling Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-09 Glenn R. Peterson, Youngung Jeong, Carlos N. Tomé, Michael D. Sangid
Ceramic-metal composites, or cermets, exhibit beneficial properties resulting in their use in many industrial applications. One challenge with cermets is mismatches in the coefficient of thermal expansion (CTE) values between the ceramic and metal phases that lead to residual stresses after processing, plasticity in the metal phase, internal stresses, and instability after thermal cycling. In order
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Monotonic tensile and cyclic deformation of a Ni-based single crystal superalloy with anisotropic microstructural rafting patterns at high temperature: Experiment and constitutive modelling Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-08 Y.S. Fan, L. Tan, X.G. Yang, W.Q. Huang, D.Q. Shi
Monotonic tensile and cyclic deformation behaviours are investigated under different microstructural rafting states of a SC Ni-based superalloy, with emphasis on the influences of the rafting extent, type and loading orientation. The deformed microstructures and the dislocation configurations are characterized to give a micro-based understanding on the varying of deformation behaviours due to rafting
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A predictive mesoscale model for continuous dynamic recrystallization Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-08 Franz Miller Branco Ferraz, Ricardo Henrique Buzolin, Stefan Ebenbauer, Thomas Leitner, Alfred Krumphals, Maria Cecilia Poletti
Thermomechanical processing of titanium alloys often requires complex routes to achieve the desired final microstructure. Recent advances in modeling and simulation tools have facilitated the optimization of these processing routes. However, existing models often fail to accurately predict microstructural changes at large deformations. In this study, we refine the physical principles of an existing
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Atomistic investigation of the interaction between an edge dislocation and 1/2<111> interstitial dislocation loops in irradiated tungsten Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-07 Ping Yu, Guisen Liu, Yao Shen
By impeding dislocation motion, the irradiation-induced dislocation loops cause irradiation hardening and further embrittlement of plasma-facing tungsten in fusion reactors, leading to its performance degradation. But fundamental questions regarding the mechanisms remain to be clarified and predictive model for loop hardening remains to be built. In this paper, interactions between gliding edge dislocations
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Onset of dynamic void coalescence in porous ductile solids Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-07 Z.G. Liu, W.H. Wong, T.F. Guo
This paper investigates void growth and coalescence in porous ductile solids under dynamic loading condition. A physical definition for the onset of void coalescence in porous ductile solids under dynamic loading is proposed. The onset is deemed to occur when the third invariant of the tensorial form of the Hill–Mandel condition attains a zero value. The definition allows for systematic investigations
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A temporal graph neural network for cross-scale modelling of polycrystals considering microstructure interaction Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-07 Yuanzhe Hu, Guowei Zhou, Myoung-Gyu Lee, Peidong Wu, Dayong Li
Machine learning (ML) based methods have achieved preliminary success in the constitutive modeling for single crystals or homogenized polycrystals with remarkable computational efficiency. However, existing ML-based constitutive models neglect grain-level anisotropy, which limits the accurate analysis of local effects. In the current work, a temporal graph neural network (TGNN) model is proposed to
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Pseudo-twin boundary improves flow stress and cyclic stability of TiAl single crystal Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-05 Yiqi Zhu, Min Yi, Wanlin Guo
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Understanding the effect of refractory metal chemistry on the stacking fault energy and mechanical property of Cantor-based multi-principal element alloys Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-04 Prashant Singh, William Trehern, Brent Vela, Prince Sharma, Tanner Kirk, Zongrui Pei, Raymundo Arroyave, Michael C. Gao, Duane D. Johnson
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Optimization of tensile properties and anisotropy in a cryogenically treated laser additively manufactured high entropy alloy Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-01 Yuan Tian, Yunzhuo Lu, R. Lakshmi Narayan
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Tuning generalized planar fault energies to enable deformation twinning in nanocrystalline aluminum alloys Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-31 Jingfan Zhang, Xueyong Pang, Yue Li, Shaolou Wei, Chao Yang, Shuaihang Pan, Binhan Sun, Dengshan Zhou, Xiaoxu Huang, Deliang Zhang, Gaowu Qin
As deformation twins have a profound impact on the plastic flow and mechanical properties of metallic materials, enhancing deformation twinning in face-centered cubic (FCC) metallic materials has long served as a unique microstructure design strategy to attain an extraordinary strength-ductility synergy. Deformation twinning, however, rarely occurs in pure FCC Al and its alloys since its generalized
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Structural characteristics of irrational Type-II Twin interfaces Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-28 Ahmed Sameer Khan Mohammed, Huseyin Sehitoglu
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Tri-functional co-nanoprecipitates enhanced cryogenic ductility by inducing structural heterogeneity and refining nano-twins in a low-stacking-fault-energy 17Mn steel Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-28 Xiaoli Chu, Yu Li, Chun Xu, Wei Li, Bin Fu, Xiaoshuai Jia
In this study, an innovative tri-functional co-nanoprecipitation strategy was employed to enhance the mechanical properties of a low stacking-fault energy (SFE) 17Mn steel for cryogenic applications. By combining severe cold deformation and subsequent annealing, a hierarchical structure emerged, featuring (Ti, Nb)C carbide (∼10 nm) and Cu-rich intermetallic (∼2 nm) in the austenitic matrix with heterogeneous
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A multiscale constitutive model of magnesium-shape memory alloy composite Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-25 Bo Xu, Aonan Su, Ziyi Wang, Chao Yu, Guozheng Kang
In this work, a multiscale constitutive model is established to describe the deformation behaviors of magnesium-shape memory alloy (Mg-SMA) composite in a wide temperature range and reveal the strengthening mechanism of SMA reinforcement on Mg. The model is established at the grain scale firstly and gradually transited to the macroscopic scale by employing a newly developed three-level scale transition
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Restraining geometrically-necessary dislocations to the active slip systems in a crystal plasticity-based finite element framework Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-23 Eralp Demir, Alvaro Martinez-Pechero, Chris Hardie, Edmund Tarleton
Strain gradients have been cast in the form of geometrically-necessary dislocations (GND) to relate the length-scale dependence of strength and to determine potential sites for failure initiation. The literature contains various different incompatibility measures, the main ones being: the total form (), the rate form for large displacements (), and the slip gradient form (). Here, these different approaches
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New insights into annealing induced hardening and deformation mechanisms in a selective laser melting austenitic stainless steel 316L Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-22 Zhiping Zhou, Jinlong Lv, Maolei Gui, Weiqi Yang
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Dynamic precipitation and recrystallization behavior during hot deformation of Al-Zn-Mg-Cu alloy: Experiment and modeling Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-21 Zinan Cheng, Cunsheng Zhang, Guannan Chu, Zhenyu Liu, Kuizhao Wang, Zijie Meng, Liang Chen, Lei Sun, Guoqun Zhao
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Calculating the grain size effect during strain hardening through a probabilistic analysis of the mean slip distance in polycrystals Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-21 Rafael Schouwenaars
Grain refinement is an important mechanism to produce stronger alloys. Strain hardening is an essential phenomenon in metal forming processes. The interaction between grain size and strain hardening is evident: a decrease in grain size causes an increase in ultimate tensile strength but a decrease in uniform elongation. The Kocks-Mecking (KM) model for strain hardening is based on the relationship
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Unraveling the Hall-Petch to inverse Hall-Petch transition in nanocrystalline high entropy alloys under shock loading Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-19 Wanghui Li, Meizhen Xiang, Zachary Howard Aitken, Shuai Chen, Yilun Xu, Xinyu Yang, Qingxiang Pei, Jian Wang, Xiaoyan Li, Guglielmo Vastola, Huajian Gao, Yong-Wei Zhang
The transition from Hall-Petch (HP) to inverse Hall-Petch (IHP) behaviors associated with grain size reduction has been recognized for over two decades. However, the underlying mechanisms for such transition in high entropy alloys (HEAs) under dynamic loading, in which abundant deformation mechanisms could be activated either sequentially or simultaneously, remain unclear. Here, we investigate the
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Enhancing strength and ductility of extruded Ti-alloy-reinforced Al-Mg-Si composites: Roles of interface nanostructures and chemical bonding Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-19 Mingfu Liu, Cunsheng Zhang, Zijie Meng, Zhenyu Liu, Liang Chen, Guoqun Zhao
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Constitutive modelling of glassy polymers considering shear plasticity and craze yielding Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-19 Zhouzhou Pan, Huanming Chen, Laurence Brassart
The inelastic behaviour of thermoplastic polymers below the glass transition temperature can involve shear plasticity or crazing, depending on the strain rate and temperature. Shear plasticity is driven by local shear stresses and is essentially volume preserving. In contrast, crazing is a failure phenomenon occurring under tension and causes significant volume change. In some cases, crazing can also
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Mechanical anisotropy induced by the competition between twinning and basal slip of AZ31 magnesium alloy under biaxial tension Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-17 Yao Cheng, Hua Qiao, Yuanjie Fu, Yunchang Xin, Qiuju He, Xinde Huang, Gang Chen, Peidong Wu, Qing Liu
The mechanical behavior of a hot-rolled Mg AZ31 plate was studied under biaxial tensions along two perpendicular loading axes of x and y in the ND-TD plane, with the x-axis aligned at a 45° counterclockwise angle from the TD (ND and TD refer to the normal direction and transverse direction). A complex strain partitioning in two loading axes is observed with the variation of stress ratio . For = 1:1
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Effect of Nb solutes on the Kolbe mechanism for microtwinning in Ni-based superalloys Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-14 Valery V. Borovikov, Mikhail I. Mendelev, Nikolai A. Zarkevich, Timothy M. Smith, John W. Lawson
As the operating temperature of jet turbine engines increase, creep becomes the life-limiting property for turbine disks and blades. At intermediate temperatures, around 600–800 °C, microtwinning contributes significantly to creep strain in these alloys. Therefore, understanding how microtwins form and grow is critical to improving the creep life of future Ni-base superalloy components. In addition
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A macro-micro approach for identifying crystal plasticity parameters for necking and failure in nickel-based alloy haynes 282 Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-13 Jiahao Cheng, Xiaohua Hu, Timothy Lach, Xiang (Frank) Chen
This work develops a two-scales macro-micro approach to address the challenge in calibrating crystal plasticity microstructural models when samples undergo necking prior to fracture. The crystal plasticity models are crucial for predicting the materials’ plastic deformation and failure at the microstructure level, identifying the materials’ intrinsic properties as well as investigating the microstructure-properties
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Physical mechanism of the intermittent plastic flow at extremely low temperatures Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-10 Kinga Nalepka, Błażej Skoczeń, Rafał Schmidt, Weronika Zwolińska-Faryj, Elwira Schmidt, Robert Chulist
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Effect of Ni4Ti3 precipitates on the functional properties of NiTi shape memory alloys: A phase field study Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-06 Bo Xu, Yuanzun Sun, Chao Yu, Jiachen Hu, Jiaming Zhu, Junyuan Xiong, Qianhua Kan, Chong Wang, Qingyuan Wang, Guozheng Kang
NiTi precipitates, which generally exist in aged Ni-rich NiTi shape memory alloys (SMAs), can have a profound effect on material properties. However, the fundamental insights into the effects of NiTi precipitates on the functional properties, including the superelasticity (SE), elastocaloric effect (eCE), and shape memory effects (SMEs), are not well understood yet, especially those originating from
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Spatially-resolved cluster dynamics modeling of irradiation growth Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-06 Matthew Maron, Yang Li, Inam Lalani, Kristopher Baker, Benjamin Ramirez Flores, Thomas Black, James Hollenbeck, Nasr Ghoniem, Giacomo Po
We develop here a spatially resolved, three-dimensional continuum model coupling cluster dynamics (SR-CD) and crystal plasticity to investigate irradiation growth in zirconium. The model uses scale separation to divide the population of the irradiation cluster into mobile and immobile families. Small interstitial and vacancy clusters are modeled using anisotropic reaction–diffusion equations. Among
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Orientation-dependent deformation mechanisms of alpha-uranium single crystals under shock compression Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-04 Yongfeng Huang, Pan Li, Songlin Yao, Kun Wang, Wangyu Hu
Large-scale non-equilibrium molecular dynamics (NEMD) simulations were employed to investigate the dynamic deformations of alpha-uranium (α-U) single crystals subjected to varying shock strengths along low-index crystallographic orientations. The pronounced anisotropy of α-U gives rise to a complex microstructural evolution under shock loading. In-depth microstructural analysis of post-shock specimens
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Synergistic grain boundary engineering for achieving strength-ductility balance in ultrafine-grained high-Cr-bearing multicomponent alloys Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-03 Xiaoming Liu, Kaikai Song, Zongde Kou, Jianhong Gong, Xiangyan Chen, Qingwei Gao, Hui Sun, Pingping Liu, Ruitao Qu, Lina Hu, Zequn Zhang, Parthiban Ramasamy, Zengqian Liu, Zhenjun Zhang, Feng Liu, Zhefeng Zhang, Jürgen Eckert
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Atomistic to continuum mechanics description of crystal defects with dislocation density fields: Application to dislocations and grain boundaries Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-03 Houssam Kharouji, Lucile Dezerald, Pierre Hirel, Philippe Carrez, Patrick Cordier, Vincent Taupin, Julien Guénolé
The atomic structure of crystal defects such as dislocations, grain or phase boundaries, control these defects’ properties: their mobility, ability to cross-slip, or solute segregation. These crystal defects can be conveniently studied by atomistic simulations and one then needs to transfer relevant information at the upper scale to model microstructures containing a large number of defects, e.g.,
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Atomistic investigation of deformation behavior of lamellar pearlite with inclined orientation Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-01 Manjiang Yu, Fangli Duan
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Strengthening complex concentrated alloy without ductility loss by 3D printed high-density coherent nanoparticles Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-01 Gang Qin, Qian Yu, Kaiping Yu, Yan Fang, Ruirun Chen, Zhiyuan Liang, Mingxin Huang
Metallic 3D printing enables fast fabrication of net-shaped components for broad engineering applications, yet it restrains the use of most mechanical processing methods for strengthening alloys, e.g. forging, rolling, etc. Here, we proposed a new strategy for enhancing the strength of 3D printed complex concentrated alloys without losing ductility. This strategy relies on the rapid cooling of 3D printing
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Micro-mechanisms of anisotropic deformation in the presence of notch in commercially pure Titanium: An in-situ study with CPFEM simulations Int. J. Plasticity (IF 9.4) Pub Date : 2024-04-30 Vivek Kumar Sahu, Pritam Chakraborty, Manasij Yadava, Nilesh P. Gurao
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Crack initiation mechanisms of micro-textured Ti60 alloys with different dwell sensitivities subjected to fatigue and dwell fatigue loading Int. J. Plasticity (IF 9.4) Pub Date : 2024-04-28 Boning Wang, Weidong Zeng, Zibo Zhao, Runchen Jia, Jianwei Xu, Qingjiang Wang
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Symmetry breaking induced asymmetric dislocation-planar fault interactions in ordered intermetallic alloys Int. J. Plasticity (IF 9.4) Pub Date : 2024-04-27 Cheng Chen, Fei Xu, Jun Song
In this study, we present the first comprehensive examination of symmetry breaking in the interactions between dislocation and superlattice planar faults, including anti-phase boundary (APB), complex stacking fault (CSF), superlattice intrinsic stacking fault (SISF), to reveal the underlying asymmetric dislocation reaction mechanisms depending on the sense of applied stress, employing both large-scale
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Study of the mechanism of the strength-ductility synergy of α-Ti at cryogenic temperature via experiment and atomistic simulation Int. J. Plasticity (IF 9.4) Pub Date : 2024-04-25 Heng Yang, Heng Li, Hong Sun, Haipeng Wang, M.W. Fu
Alpha titanium (α-Ti) is a promising material for making high-performance components for applications in aerospace, marine, energy and healthcare fields. The excellent strength-ductility synergy has been observed for α-Ti at cryogenic temperature. Twinning is generally considered a key mechanism of outstanding cryogenic ductility. The dislocation-grain boundaries (GBs) interaction and void nucleation
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Understanding the strain localization in additively manufactured materials: Micro-scale tensile tests and crystal plasticity modeling Int. J. Plasticity (IF 9.4) Pub Date : 2024-04-25 Daijun Hu, Zixu Guo, Nicolò Grilli, Aloysius Tay, Zhen Lu, Wentao Yan