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Zr61Ti2Cu25Al12 bulk metallic glass under three-point bending: Characteristic of large-deflection deformation Intermetallics (IF 3.398) Pub Date : 2021-02-25 Diao-Feng Li; Yong Shen; Jian Xu
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Twinning and orientation relationships of the monoclinic θ-Al45(Mn,Cr)7 phase in an Al–Mg alloy containing Mn Intermetallics (IF 3.398) Pub Date : 2021-02-26 Xiaoling Xiao; Hongwei Liu; Florian Vogel
The spherical-like θ-Al45(Mn,Cr)7 particle having a monoclinic structure is observed in an Al–Mg alloy using TEM. Two types of twins with different twin directions are found in these θ-Al45(Mn,Cr)7 particles. One type is shown to be a (1‾11) twin with (1‾11) plane serving as the twinning plane and the shear direction is η1 = [12‾3]; the other type is seen to be a (1‾10) orientation twin with (1‾10)
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Roles of Y and Fe contents on glass-forming ability, thermal stability, and magnetic properties of Co-based Co–Fe–Y–B bulk metallic glasses Intermetallics (IF 3.398) Pub Date : 2021-02-26 Xinyu Liang; Yanhui Li; Feng Bao; Zhengwang Zhu; Haifeng Zhang; Wei Zhang
Soft magnetic Co-based bulk metallic glasses (BMGs) with large supercooled liquid region (ΔTx) and high saturation magnetic flux density (Bs) have been developed in a new Co–Fe–Y–B alloy system. Addition of appropriate contents of Y and Fe into a Co75B25 alloy enlarges the ΔTx and improves the glass-forming ability (GFA). ΔTx of 50–64 K and a critical diameter of up to 2.0 mm have been achieved for
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A good balance between strength and ductility in Mg–Zn–Mn-Gd alloy Intermetallics (IF 3.398) Pub Date : 2021-02-24 Yang Zhao; Dingfei Zhang; Junyao Xu; Shiyu Zhong; Bin Jiang; Fusheng Pan
Microstructure evolution, dynamic recrystallization (DRX) behavior and mechanical properties of Mg–6Zn–1Mn-xGd alloys (x = 0, 0.2, 1.0 and 3.0 wt%) were investigated. The results showed that the phase components of as-cast Mg–6Zn–1Mn alloy were comprised of Mg7Zn3, α-Mn and α-Mg, while Mg3Zn6Gd (I phase) and Mg3Zn3Gd2 (W phase) were detected with the addition of Gd. Gd addition led to finer recrystallized
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Magnetism and magnetic phase diagram of sigma-phase Fe68V32 compound Intermetallics (IF 3.398) Pub Date : 2021-02-23 Piotr Konieczny; Stanisław M. Dubiel
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Thermal, magnetic and mechanical behavior of large-sized Fe-based amorphous alloy ribbons by twin-roll strip casting Intermetallics (IF 3.398) Pub Date : 2021-02-24 C.Y. Liu; Y.X. Zhang; C.Y. Zhang; J. Kang; G. Yuan; R.D.K. Misra
Fe-based amorphous alloys are characteristic of high saturation magnetization, low coercivity, and low core loss, which holds a grand promise for several engineering applications, such as soft magnetic, corrosion-resistant and wear-resistant coatings. However, poor amorphous forming ability (AFA) and size limit remain the main obstacles in applications. This study aims to address those scientific-technical
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Structural and low-temperature magnetic properties of as-quenched and annealed Ni–Si–B alloys produced by rapid solidification Intermetallics (IF 3.398) Pub Date : 2021-02-23 M. Ipatov; V. Zhukova; L. Dominguez; K.L. Alvarez; A. Chizhik; A. Zhukov; J. Gonzalez
Structural characterization (differential scanning calorimetry, DSC, and X-ray diffraction, XRD) and temperature dependence of the magnetization are reported in Ni80Si10B10 and Ni75Si15B10 alloy ribbons produced by rapid solidification. XDR and DSC measurements lead to confirm the amorphous character of Ni75Si15B10 alloy while the Ni80Si10B10 alloy presents a mixture of amorphous and crystalline (Nickel
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Synergistic strengthening mechanisms of rhenium in nickel-based single crystal superalloys Intermetallics (IF 3.398) Pub Date : 2021-02-22 En-Lai Yue; Tao Yu; Yun-Jiang Wang; Chong-Yu Wang
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Investigation of tensile and high cycle fatigue failure behavior on a TIG welded titanium alloy Intermetallics (IF 3.398) Pub Date : 2021-02-22 Duqiang Ren; Yun Jiang; Xiaoan Hu; Xianzheng Zhang; Xiaoping Xiang; Kai Huang; Huixiang Ling
The fracture behaviors of tungsten inert gas (TIG) welded titanium alloy TA15 subjected to tensile and fatigue loadings were investigated. Using the staircase test method, the fatigue probabilistic S-N (P-S-N) curves of the titanium alloy were obtained. Electron back scattered diffraction (EBSD) and Scanning electron microscope (SEM) were utilized to study fracture mechanism. The results showed that
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Refinement of coarse AlN by the shear effect of dislocation slip during cold rolling in low-temperature grain-oriented silicon steel Intermetallics (IF 3.398) Pub Date : 2021-02-20 Xianglong Wang; Weina Zhang; Yansen Hao; Qiwu Jiang; Degang Li; Yuanhua Li; Li Li
The transition behavior of coarse AlN during cold rolling in the low-temperature grain-oriented silicon steel normalized sheet was investigated using field emission scanning electron microscopy (SEM) and field emission transmission electron microscopy (TEM). The SEM observation results showed that the size of AlN decreased with the increase of the cold rolling reduction rate, and the average sizes
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Microstructures and mechanical properties of CoCrFeNiMn high-entropy alloy coatings by detonation spraying Intermetallics (IF 3.398) Pub Date : 2021-02-18 Wei-Bing Liao; Zhong-Xuan Wu; Wenjun Lu; Minjun He; Ting Wang; Zongxiao Guo; Jianjun Huang
CoCrFeNiMn high-entropy alloy (HEA) coatings were deposited on 316L stainless steel substrate by detonation spraying technique. The HEA coatings had a dense microstructure and contained a small amount of flocculent metal oxides, showing a main face-centered-cubic (FCC) solid solution structural matrix with amounts of nano-multi-component metal oxides. It was found that the microhardness of CoCrFeNiMn
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Comparative irradiation response of an austenitic stainless steel with its high-entropy alloy counterpart Intermetallics (IF 3.398) Pub Date : 2021-02-17 M.A. Tunes; G. Greaves; H. Bei; P.D. Edmondson; Y. Zhang; S.E. Donnelly; C.G. Schön
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Preparation, microstructure and mechanical properties of tungsten fiber reinforced LaAlCuNi metallic glass matrix composites Intermetallics (IF 3.398) Pub Date : 2021-02-17 Zibo Zhang; Jian Kong; Xiangkui Liu; Xinxiang Song; Kewei Dong
In this paper, Wf/La62Al14Cu12Ni12 bulk metallic glass composites (BMGCs) were successfully prepared by a new forward melt infiltrating method. Compared with Wf/Zr-based BMGCs, the preparation of Wf/La62Al14Cu12Ni12 BMGCs is simpler and more convenient. In the experimental part, quasi-static compressive behaviors of composites with different fiber volume fractions were systematically investigated.
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Effect of Cr content on precipitation behavior of (CoCrNi)94Ti3Al3 medium entropy alloys Intermetallics (IF 3.398) Pub Date : 2021-02-13 Xi Bai; Wei Fang; Jiwei lv; Ruobin Chang; Haoyang Yu; Jiaohui Yan; Xin Zhang; Fuxing Yin
The L12 nanoparticles-enhanced alloys have huge potential in high temperature applications. In this study, the effects of Cr content on precipitation behaviors of (CoCrNi)94Ti3Al3 medium entropy alloys are investigated. The results indicate the fraction of L12 phase increases with the rising Cr content, meanwhile, the size and coarsening rate of L12 phase decrease, which suppresses the overaged degradation
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Microstructural characterization of arc-melted and directionally solidified near-eutectic molybdenum–silicon–boron alloys Intermetallics (IF 3.398) Pub Date : 2021-02-12 Linye Zhu; Shuntaro Ida; Georg Hasemann; Manja Krüger; Kyosuke Yoshimi
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Modeling APB energies in multicomponent Ni-base superalloys Intermetallics (IF 3.398) Pub Date : 2021-02-12 K.V. Vamsi; S. Karthikeyan
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Deformation of Mg-γMg17Al12 in situ composites: Room temperature mechanical behaviour, microstructures and mechanisms Intermetallics (IF 3.398) Pub Date : 2021-02-12 Patricia Donnadieu; Souad Benrhaiem; Gilles Renou; Chunyang Zhang; Catherine Tassin; Jean-Jacques Blandin
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Creep behaviour of two-phase lamellar TiAl: Crystal plasticity modelling and analysis Intermetallics (IF 3.398) Pub Date : 2021-02-10 M. Umer Ilyas; M. Rizviul Kabir
Two-phase (α2Ti3Al+γTiAl) fully lamellar TiAl alloys show highly anisotropic creep behaviour. Depending on lamellar orientations, locally in the TiAl phases hard and easy deformation modes are active, which significantly influence the creep behaviour at a global scale. To obtain comprehensive understanding how the locally activated crystallographic deformation modes influence the macroscopic creep
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Effects of Fe, Mn, chemical grain refinement and cooling rate on the evolution of Fe intermetallics in a model 6082 Al-alloy Intermetallics (IF 3.398) Pub Date : 2021-02-08 M.H. Khan; A. Das; Z. Li; H.R. Kotadia
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Analysis of deformation behavior of VCoNi medium-entropy alloy at temperatures ranging from 77 K to 573 K Intermetallics (IF 3.398) Pub Date : 2021-02-08 Zhenhua Han; Chenyang Ding; Gang Liu; Jun Yang; Yuzhou Du; Ran Wei; Yuanqing Chen; Guojun Zhang
The deformation behavior of VCoNi medium-entropy alloy at the temperatures ranging from 77 K to 573 K was experimentally investigated in this study. It showed that the high-density nanosized dislocation substructures and deformation twins played a major role in the tensile deformation at 77 K, and their synergistic effects caused an excellent combination of strength and ductility. When the temperature
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A study on two R-phase transformations in intermediate temperature aged Ni-rich TiNiFe-based shape memory alloys Intermetallics (IF 3.398) Pub Date : 2021-02-06 Chun-Hsiang Tu; Shyi-Kaan Wu; Chieh Lin; Bo-Yang Huang
The effects of intermediate temperature aging on two-stage R-phase transformation behavior exhibited in Ti50-xNi48+xFe2 (x = 0.5 and 1.5) SMAs were investigated. In Ti48.5Ni49.5Fe2 SMA, no transformation occurred in the as solution-treated state, and B2↔R1 transformation was induced by Ti3Ni4 precipitates when the specimens were aged at 350 °C. When the specimens were aged at 450 °C, a two-stage R-phase
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Cluster glass behaviour in MnMn0.25Sb Intermetallics (IF 3.398) Pub Date : 2021-02-04 Hanuma Kumar Dara; P.D. Babu; G. Markandeyulu
Magnetic properties of intermetallic MnMn0.25Sb crystallizing in the NiAs-type hexagonal structure are reported. A spin-glass transition at Tf ≈ 10.7 K was identified from Ac susceptibility measurements. The value of the Mydosh parameter (φ≈0.06). was further indicative of cluster spin glass like state. The frequency dependence of Tf was investigated by critical slowing-down model and Vogel-Fulcher
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Systematic experimental search for Fe2YZ Heusler compounds predicted by ab-initio calculation Intermetallics (IF 3.398) Pub Date : 2021-02-03 M. Kratochvílová; M. Klicpera; F. Malý; J. Valenta; M. Veis; R.H. Colman; O. Heczko
An extensive experimental investigation of Fe-based Heusler alloys has been performed in order to potentially prepare new materials which are tetragonally distorted and have large perpendicular magnetic anisotropy crucial not only for the STT-MRAM applications but also for magnetic shape memory devices. Based on criteria demanded for the MSM applications 25 Fe2YZ various compounds were selected for
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Electronic properties of co-doped nonstoichiometric germanium telluride Intermetallics (IF 3.398) Pub Date : 2021-02-03 Dana Ben-Ayoun; Yaniv Gelbstein
GeTe-based alloys have been considered as p-type thermoelectric materials for decades. Yet the fact that they possess intrinsically high concentration of cation germanium vacancies have triggered the thermoelectric community in finding alternatives and strategies to optimize their efficiency. While most of the published studies mainly discuss the stoichiometric alloy, here we demonstrate the introduction
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Effects of printing volumetric energy densities and post-processing treatments on the microstructural properties, phase transformation temperatures and hardness of near-equiatomic NiTinol parts fabricated by a laser powder bed fusion technique Intermetallics (IF 3.398) Pub Date : 2021-02-02 Khashayar Khanlari; Qi Shi; Kefeng Li; Ke Hu; Peng Cao; Xin Liu
Equiatomic and near-equiatomic NiTinol alloys, mainly due to the exhibition of adjustable mechanical and thermal shape memory properties, are widely exploited to produce different smart and functional devices. Laser powder bed fusion technique was used in this research to process dense NiTinol parts from a prealloyed near-equiatomic NiTi powder, using three different volumetric energy densities. In
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Effect of ternary additions of Cu and Fe on the hot deformation behavior of NiTi shape memory alloy - A study using processing maps Intermetallics (IF 3.398) Pub Date : 2021-02-01 Niraj Nayan; Gaurav Singh; S.V.S. Narayana Murty; P. Ramesh Narayan; M. Mohan; P.V. Venkitakrishnan; Upadrasta Ramamurty
The addition of ternary alloying elements Cu and Fe on the hot workability of binary NiTi SMA is assessed using the processing maps approach. Uniaxial compression test data obtained in the temperature, T, range 800–1050 °C and strain rate, ε˙, of 10−3 – 10+1 s−1 were utilized to construct power dissipation, instability and strain rate sensitivity maps at true strain, ε = 0.5. These maps and complementary
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Effects of Cr alloying on the evolution of solidification microstructure and phase transformations of high-Nb containing γ-TiAl based alloys Intermetallics (IF 3.398) Pub Date : 2021-01-31 Vajinder Singh; Chandan Mondal; Rajdeep Sarkar; P.P. Bhattacharjee; P. Ghosal
Evolution of the as-solidified microstructures of Ti–45Al–8Nb, Ti–45Al–8Nb–2Cr-0.2B, Ti–45Al–8Nb–4Cr-0.2B alloys, and phase stability during high-temperature exposure (1000°, 1100°,1200 °C) have been analyzed in the present report. Macroscopic examinations of the as-cast pancakes indicate that Nb, Cr, and B alloying can be effectively utilized as potential grain/colony size refiners for Ti–45Al base
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Investigation on solid particles erosion resistance of laser cladded CoCrFeNiTi high entropy alloy coating Intermetallics (IF 3.398) Pub Date : 2021-01-30 Shiyi Zhang; Bin Han; Meiyan Li; Qi Zhang; Chunyang Hu; Shengyuan Niu; Zhaohui Li; Yong Wang
High entropy alloy (HEA) as coating material has more economical application value. In this study, CoCrFeNiTi HEA coating without cracks and pores was successfully prepared on 304 stainless steel substrate by laser cladding. The phase structure of the CoCrFeNiTi HEA coating was composed of main phase with an FCC lattice, Fe and Cr rich phase with an SC lattice and CoTi2 type Laves phase. The microstructure
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Hysteresis, latent heat and cycling effects on the magnetocaloric response of (NiMnSi)0.66(Fe2Ge)0.34 alloy Intermetallics (IF 3.398) Pub Date : 2021-01-31 L.M. Moreno-Ramírez; Á. Díaz-García; J.Y. Law; A.K. Giri; V. Franco
In this work, we further analyze the promising magnetocaloric (NiMnSi)0.66(Fe2Ge)0.34 alloy, which presents isothermal entropy change values as large as 29 J kg−1 K−1 for 2 T at room temperature. It undergoes a magnetostructural transition accompanied by large thermal/magnetic hysteresis, which remains up to high magnetic fields (corroborated by the elaboration of an experimental magnetic phase diagram)
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Machining mechanism and deformation behavior of high-entropy alloy under elliptical vibration cutting Intermetallics (IF 3.398) Pub Date : 2021-01-30 Dinh-Quan Doan; Te-Hua Fang; Tao-Hsing Chen
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Antiferromagnetic ordering in the ternary uranium germanide UNi1–xGe2: Neutron diffraction and physical properties studies Intermetallics (IF 3.398) Pub Date : 2021-01-29 Mathieu Pasturel; Maria Szlawska; Jacek Ćwik; Dariusz Kaczorowski; Adam P. Pikul
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Improved superelastic stability of NiTi shape memory alloys through surface nano-crystallization followed by low temperature aging treatment Intermetallics (IF 3.398) Pub Date : 2021-01-25 Xiaoqiang Li; Hu Chen; Weimin Guo; Yanjin Guan; Zuocheng Wang; Qingkai Zeng; Xiebin Wang
In this work, we proposed a process to improve the functional stability of Ni-rich NiTi alloys, which combines surface nano-crystallization by means of ultrasonic shot peening and subsequent low-temperature (523 K) aging treatment. The as-annealed coarse-grained NiTi plates were fist subjected to ultrasonic shot peening, which generates nano-grains at the surface region, and introduces dislocation
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Crystal structure and phase composition evolution during heat treatment of Fe-45Ga alloy Intermetallics (IF 3.398) Pub Date : 2021-01-27 T.N. Vershinina; I.A. Bobrikov; S.V. Sumnikov; A.O. Boev; A.M. Balagurov; A.K. Mohamed; I.S. Golovin
The atomic structure of the high-temperature β-Fe6Ga5 phase, formed in the Fe-45at.%Ga alloy during rapid cooling from the melt, has been refined by X-ray, neutron diffraction techniques, and density functional theory calculations. The regularities of the phase composition evolution of the quenched Fe-45at.%Ga alloy in the process of continuous slow heating and cooling under vacuum conditions have
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Low energy atomic traps sluggardize the diffusion in compositionally complex refractory alloys Intermetallics (IF 3.398) Pub Date : 2021-01-27 Ankit Roy; Joydeep Munshi; Ganesh Balasubramanian
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The complementary effects of Fe and metalloids on the saturation magnetization of Fe-based amorphous alloys Intermetallics (IF 3.398) Pub Date : 2021-01-23 Lingxiang Shi; Xinyu Hu; Yehui Li; Guangtong Yuan; Kefu Yao
Developing Fe-based amorphous alloys with high saturation flux density (Bs) have been challenging topics for a long time. Metalloid elements like B, Si, C, and P are key elements for Fe-based amorphous alloys, but the addition of multiple metalloids would significantly complicate the effects of each metalloid on saturation flux density. Herein, Fe83-85(B, C, Si)14–16P1 amorphous alloys with high Bs
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Understanding crystal structure and morphology evolution of Fe, Mn, Cr-containing phases in Al-Si cast alloy Intermetallics (IF 3.398) Pub Date : 2021-01-21 Xiaozu Zhang; Dongtao Wang; Xinzhong Li; Haitao Zhang; Hiromi Nagaumi
As a common detrimental element in Al-Si cast alloy, Fe can be effectively removed by Fe-containing intermetallic separation in the alloy melt. However, the thermodynamic formation mechanism and growth morphology evolution of high separable Fe-containing intermetallic have not been investigated and clarified in detail until now. In this study, thermodynamic calculation, three-dimensional (3D) growth
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Designing advanced intermetallic titanium aluminide alloys for additive manufacturing Intermetallics (IF 3.398) Pub Date : 2021-01-22 David Wimler; Janny Lindemann; Marcel Reith; Alexander Kirchner; Melissa Allen; Wilfredo Garcia Vargas; Martin Franke; Burghardt Klöden; Thomas Weißgärber; Volker Güther; Martin Schloffer; Helmut Clemens; Svea Mayer
Lightweight intermetallic γ-TiAl based alloys are innovative high-temperature structural materials. So far, these alloys are in use as turbine blades or turbocharger turbine wheels in advanced aerospace and automotive engines, where they are produced by means of investment casting as well as wrought processing, e.g. hot-forging. Through the development of powder-based additive manufacturing processes
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Effect of Cu doping on properties of RHQT processed powder in tube Nb3Al wires Intermetallics (IF 3.398) Pub Date : 2021-01-20 Xuan Yu; Guowei Li; Yuanbin Hu; Ming Chen; Zhou Yu; Lian Liu; Yongliang Chen; Yong Zhang; Yong Zhao
Powder-in-tube (PIT) Nb3(Al1-xCux)(x = 0–0.04) superconducting wires were fabricated by rapid heating, quenching and transformation (RHQT) process. With the addition of Cu, disordered Nb3Al A15 phase with stoichiometric composition was formed in the quenched wires and atomic long range ordering occurred during the low temperature annealing process, resulting in improvement of Tc, Jc and Birr performance
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Microstructure evolution, solidification characteristic and magnetocaloric properties of MnFeP0·5Si0.5 particles by droplet melting Intermetallics (IF 3.398) Pub Date : 2021-01-19 Defang Tu; Jun Li; Ruiyao Zhang; Qiaodan Hu; Jianguo Li
Mn–Fe–P–Si compounds are promising magnetocaloric materials for magnetic refrigeration. However, the microstructure evolution and solidification characteristics are rarely discussed in the literature. Here, we investigate the solidification characteristics and microstructure evolution of MnFeP0·5Si0.5 alloys under different undercooling and cooling rates based on droplet melting method. Results show
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Crystallization behavior and soft magnetic properties of Fe–B–P–C–Cu ribbons with amorphous/α-Fe hierarchic structure Intermetallics (IF 3.398) Pub Date : 2021-01-19 Yuluo Li; Ningning Shen; Suo Zhang; Yidong Wu; Li Chen; Kuang Lv; Zhanbing He; Fushan Li; Xidong Hui
In this work, Fe83+x(B4P8C4)16-xCu1 (x = 0, 1, 1.5 and 2 at. %) alloy system with amorphous/α-Fe hierarchic structures in as-cast state were artificially designed. The microstructure, crystallization kinetics, nanocrystalline structure, and magnetic properties of the alloys were systematically investigated. And the structural mechanism for the magnetic properties of these alloys was discussed. It is
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Influence of Ni foam/Sn composite solder foil on IMC growth and mechanical properties of solder joints bonded with solid-liquid electromigration Intermetallics (IF 3.398) Pub Date : 2021-01-19 Xin Mao; Ruhua Zhang; Xiaowu Hu
The effects of Ni foam addition and solid-liquid electromigration on the bonding of Cu/Sn-3.0Ag-0.5Cu/Cu joints under condition of 320 °C for 2, 4 and 8 h with the electric densities of 0, 3.33 and 6.67 × 102 A/cm2 were investigated. The results indicated that intermetallic compounds (IMCs) performed non-interfacial growth in the Cu/Ni foam/SAC305 system and were distributed in an island-like aggregation
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Fe13Ga9 intermetallic in bcc-base Fe–Ga alloy Intermetallics (IF 3.398) Pub Date : 2021-01-16 A. Leineweber; H. Becker; A. Boev; I.A. Bobrikov; A.M. Balagurov; I.S. Golovin
Fe−Ga alloys (Galfenols) are of interest due to their pronounced magnetostriction, whereby the mechanistic understanding is limited. By means of powder X-ray and neutron diffraction it is shown that as-cast Fe-38.4 at%Ga alloy consists of Fe13Ga9 intermetallic with a monoclinic Ni2In/NiAs-related structure, which coexists with bcc solid solution. By means of electron backscatter diffraction it is shown
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Strain modulation of magnetic coupling in the metallic van der waals magnet Fe3GeTe2 Intermetallics (IF 3.398) Pub Date : 2021-01-16 Mengmei Zhu; Yurong You; Guizhou Xu; Jiaxuan Tang; Yuanyuan Gong; Feng Xu
We investigated the strain modulation of the magnetic states and interatomic exchange interactions in layered van der Waals magnet Fe3GeTe2 by detailed first-principles studies. The energy-minimum calculations demonstrate the ground state of bulk Fe3GeTe2 is weak antiferromagnetic coupling, in contrast to most precious reports, and it can be modulated to ferromagnetic coupling under small a-axis distortion
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Experimental investigation on the phase equilibria in the system Sn–Zr (0–100 at.% Zr) by using “spot-technique” and DTA Intermetallics (IF 3.398) Pub Date : 2021-01-16 Biswajit Samanta; S. Balakrishnan; K. Ananthasivan
The solid-liquid equilibria in the system Sn–Zr were investigated experimentally by using the spot technique (thermo-optometry based technique) and differential thermal analysis. The liquidus in the composition range 0–80 at.% Zr was experimentally established. The solidus-liquidus in the composition range 80–100 at.% Zr and all other invariant equilibria have also been re-established. The temperature
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Role of Si on lamellar formation and mechanical response of two SPS Ti–15Al–15Si and Ti–10Al–20Si intermetallic alloys Intermetallics (IF 3.398) Pub Date : 2021-01-16 M. Cabibbo; A. Knaislová; P. Novák; F. Průša; C. Paoletti
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Facile sonochemical synthesis of silver nanoparticle and graphene oxide deposition on bismuth doped manganese oxide nanotube composites for electro-catalytic sensor and oxygen reduction reaction (ORR) applications Intermetallics (IF 3.398) Pub Date : 2021-01-17 Rajabathar Jothi Ramalingam; Prabhakarn Arunachalam; Mabrook S. Amer; Zeid A. AlOthman; Abdullah G. Alanazi; Murefah M. AL-Anazy; Hamad A AL-Lohedan; Wasmiah Mohammed Dahan
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FeCo-based amorphous alloys with high ferromagnetic elements and large annealing processing window Intermetallics (IF 3.398) Pub Date : 2021-01-13 X.S. Li; Z.Y. Xue; X.B. Hou; G.Q. Wang; X. Huang; H.B. Ke; B.A. Sun; W.H. Wang
A seven-component (FeCo)xBSiVCuY amorphous/nanocrystalline alloy system with high ferromagnetic element contents (x = 85, 86 and 87, at atomic percent) was synthesized by rapid quenching method. The microstructure, crystal structure, magnetic property and crystallization behavior were systematically investigated. It is found that the highest saturation magnetization of these as-cast ribbons reaches
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Segregation of alloying elements at the bcc-Fe/B2–NiAl interface and the corresponding effects on the interfacial energy Intermetallics (IF 3.398) Pub Date : 2021-01-13 Xueyun Gao; Haiyan Wang; Cainv Ma; Meng Lv; Huiping Ren
The distribution tendency of the alloying elements in the body-centered cubic (bcc) Fe/B2–NiAl interface is of fundamental importance for understanding the nucleation and morphology of NiAl precipitates during the aging process of the B2–NiAl precipitation strengthened maraging steels. In the present work, the first-principles density functional calculations have been used to perform an extensive investigation
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Hybrid reinforced aluminum matrix composites fabricated by selective laser melting Intermetallics (IF 3.398) Pub Date : 2021-01-13 Hailong Liao; Wenqi Zhang; Changpeng Chen; Baijin Chen; Gang Xue; Haihong Zhu
In this work, near full density and crack-free hybrid aluminum matrix composites (HAMCs) reinforced with Cr3C2 ceramic particles and Ni–Cr trace elements were successfully fabricated by selective laser melting (SLM). The phase structure, microstructure, mechanical properties and strengthening mechanism of HAMCs were investigated. The results show that various intermetallic compounds, such as Al13Cr2
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Investigation on the asymmetric creep ageing behaviour of 2195-T84 Al–Li alloy under different tensile and compressive stress levels Intermetallics (IF 3.398) Pub Date : 2021-01-12 He Li; Lihua Zhan; Minghui Huang; Xing Zhao; Chang Zhou
A comprehensive work has been carried out on the creep ageing behaviour of 2195-T84 Al–Li alloy under both tensile and compressive stresses at 180 °C for 16 h. The corresponding creep deformation and age hardening phenomena have been investigated by creep tests and uniaxial tensile tests. It has been found that the creep strains after tension creep tests are much larger than those after compression
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Dynamic mechanical relaxation behavior of binary metallic glasses Intermetallics (IF 3.398) Pub Date : 2021-01-05 M.N. Liu; Q. Hao; J. Dong; B.A. Sun; S.D. Feng; D. Crespo; J.C. Qiao
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Research on local corrosion behavior of thermo-mechanically affected zone in dissimilar AA2024/7075 friction stir welds Intermetallics (IF 3.398) Pub Date : 2021-01-06 Chenghang Zhang; Guangjie Huang; Qing Liu
The aluminum alloys joints welded by friction stir welding (FSW) are usually fractured in or near the thermo-mechanically affected zone (TMAZ) of the welded zone, and different microstructural zones produced by FSW affect the corrosion resistance of the joints. In the present work, we performed the research on local corrosion behavior of the TMAZ in dissimilar AA2024/7075 joints by employing multiple
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Determination of mechanical and vibrational properties of the Sr(Zn1−xAlx)13 intermetallic compound Intermetallics (IF 3.398) Pub Date : 2021-01-02 J. Gutiérrez-Menchaca; D. Torres-Torres; A.H. Barajas-Aguilar; S.J. Jiménez-Sandoval; A.M. Garay-Tapia
Detailed knowledge about physical and chemical properties of the SrZn13 intermetallic compound is of technological importance in the design and manufacture of Sr-modified Zn-base alloys. The main objective of this study was to further knowledge of the mechanical and vibrational properties of the Al-incorporated Sr(Zn1−xAlx)13 compound. The Sr(Zn1−xAlx)13 was synthesized by melting down zinc ingots
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Spark plasma sintering behavior of TaNbHfZrTi high-entropy alloy powder synthesized by hydrogenation-dehydrogenation reaction Intermetallics (IF 3.398) Pub Date : 2021-01-02 Ki Beom Park; Jae-Young Park; Young Do Kim; Tae-Wook Na; Chan Bin Mo; Jong-In Choi; Jun Choi; Hyun-Su Kang; Hyung-Ki Park
In this study, we successfully synthesized TaNbHfZrTi high-entropy alloy (HEA) powders using a hydrogenation-dehydrogenation reaction and investigated their sintering behavior using a spark plasma sintering method. The initial ingot had a single solid solution body-centered cubic (BCC) phase, but after annealing in the hydrogen atmosphere, it absorbed hydrogen and transformed to a metal hydride phase
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Correlation between particle size and magnetic properties in soft-milled Ni45Co5Mn34In16 powders Intermetallics (IF 3.398) Pub Date : 2020-12-31 D.L.R. Khanna; V. Sánchez-Alarcos; V. Recarte; J.I. Pérez-Landazábal
The effect of microstructural defects induced by mechanical milling has been studied in a Ni–Mn–In–Co metamagnetic shape memory alloy. The martensitic transformation and Curie temperatures do not change with grinding, thus pointing out to a null variation of long range atomic order as a consequence of the deformation. Nevertheless, the enthalpy change of the martensitic transformation highly decreases
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Crystal structure and magnetic properties of R11Co4In9 (R=Tb, Dy, Ho and Er) compounds Intermetallics (IF 3.398) Pub Date : 2020-12-30 S. Baran; Yu. Tyvanchuk; A. Szytuła
Crystal structure and magnetic properties of the R11Co4In9 compounds (R = Tb–Er) have been investigated by means of X-ray diffraction as well as dc magnetic measurements. The compounds crystallize in the orthorhombic Nd11Pd4In9-type crystal structure (Cmmm space group) in which the rare earth atoms occupy five nonequivalent sublattices. Magnetic properties of the investigated compounds are related
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Study on hydrogen absorption and surface properties of TiZrVNbCr high entropy alloy Intermetallics (IF 3.398) Pub Date : 2020-12-30 Ki Beom Park; Jae-Young Park; Young Do Kim; Jong-In Choi; Hyeon-Tae Im; Jang-Won Kang; Hyun-Su Kang; Tae-Wook Na; Hyung-Ki Park
In this study, we examined the microstructure, hydrogen absorption behavior, and native oxide layer of 20Ti–20Zr–20V–20Nb–20Cr high entropy alloy. It was revealed that the alloy consisted of two phases with the chemical composition of 31.1Ti-19.6Zr-16.6V-26.0Nb-6.7Cr (bright phase) and 9.1Ti-20.3Zr-23.4V-14.1Nb-33.1Cr (dark phase). Even though an oxide layer was formed on the surface of the alloy due
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Hardening overwhelming softening in Ti-based metallic glass composites upon cold rolling Intermetallics (IF 3.398) Pub Date : 2020-12-25 Qianyong Zhu; Zhong Wang; Huijun Yang; Junwei Qiao; Lan Jia; Yucheng Wu
For in-situ Ti48Zr20Nb12Cu5Be15 metallic glass matrix composites (MGMCs) upon cold rolling, the yield strength is obviously enhanced, and the plasticity instability is effectively alleviated. The increase in yield strength in such kinds of composites is due to the fact that the work hardening of dendrites overwhelms the softening of the amorphous matrix. A quantitative model of predicting yield strengths
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Evolution of microstructure and texture during homogenization in a strip cast AA8011 aluminum alloy Intermetallics (IF 3.398) Pub Date : 2020-12-25 Ranjeet Kumar; Aman Gupta; Tushar R. Dandekar; Rajesh K. Khatirkar
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A strategy of optimizing magnetism and hysteresis simultaneously in Ni–Mn-based metamagnetic shape memory alloys Intermetallics (IF 3.398) Pub Date : 2020-12-25 Hai-Le Yan; Xiao-Ming Huang; Jin-Han Yang; Ying Zhao; Feng Fang; Nan Jia; Jing Bai; Bo Yang; Zongbin Li; Yudong Zhang; Claude Esling; Xiang Zhao; Liang Zuo
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