Results 141 to 150 of about 15,726 (187)

Martensitic transformation and mechanical behavior of a medium-entropy alloy

Materials Science and Engineering: A, 2020
Abstract Diffusionless martensitic transformation (MT) exerts one of the most significant influences on the mechanical properties of alloys. However, the application of martensitic transformation to improve mechanical performance was seldom involved in the manufacture of high-entropy alloys (HEAs) and medium-entropy (MEAs) alloys.
Wang, C., Lin, K.F., Zhao, Y.L., Yang, T., Zhang, Tianlong, Liu, W.H., Hsueh, C.H., Lin, H.C., Kai, J.J., Liu, C.T.   +9 more
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Bifunctional nanoprecipitates strengthen and ductilize a medium-entropy alloy

Nature, 2021
Single-phase high- and medium-entropy alloys with face-centred cubic (fcc) structure can exhibit high tensile ductility1,2 and excellent toughness2,3, but their room-temperature strengths are low1-3. Dislocation obstacles such as grain boundaries4, twin boundaries5, solute atoms6 and precipitates7-9 can increase strength.
Ying Yang, Tianyi Chen, Lizhen Tan, Jonathan D. Poplawsky, Ke An, Yanli Wang, German D. Samolyuk, Ken Littrell, Andrew R. Lupini, Albina Borisevich, Easo P. George   +10 more
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Deformation twinning in Ti48.9Zr32.0Nb12.6Ta6.5 medium entropy alloy

Materials Science and Engineering: A, 2021
Abstract The {112} β deformation twinning has never been confirmed in refractory high or medium entropy alloys (HEAs or MEAs) at room temperature. Here a Ti48.9Zr32.0Nb12.6Ta6.5 MEA shows {112} β twins was designed based on the d-electron alloy design method learned from β Ti alloys.
Xianbing Zhang, Weilin Wang, Jialin Wu, Shubin Wang, Jian Sun, Jing Yang Chung, Stephen J. Pennycook   +6 more
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Kinking in a refractory TiZrHfNb0.7 medium-entropy alloy

Materials Letters, 2020
Abstract As a type of cooperative deformation like twinning, kinking can improve the deformability of materials by stress relaxation and crystal reorientation. In this work, kinking with 〈0 1 1〉 lattice rotation axis was identified in a refractory TiZrHfNb0.7 medium-entropy alloy (MEA).
Shubin Wang, Mingxu Wu, Da Shu, Baode Sun   +3 more
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Microstructural Characterization of Medium Entropy Alloy Thin Films

SSRN Electronic Journal, 2019
This study presents detailed microstructural investigations on single and bilayer thin films of two medium entropy alloys (MEAs) synthesized using magnetron sputter deposition. Single layer thin films of CoCrFeNi and AlCoCrFe show single-phase face-centered cubic (fcc) and body-centered (bcc) structure, respectively. The bilayer thin film consisting of
Chawake, N.Zalesak, J.Gammer, Ch.Franz, R.Cordill, M.Kim, J.Eckert, J.   +7 more
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Design of high-ductile medium entropy alloys for dental implants

Materials Science and Engineering: C, 2020
Developing new materials with high strength and ductility, low modulus and high biocompatibility is a continuing demand in the field of surgical implants. Inspired by the high-entropy design philosophy, two medium entropy alloys (MEAs), i.e. equiatomic TiZrHf and equi-weight Ti40Zr20Hf10Nb20Ta10 were designed and their mechanical properties and ...
Shubin, Wang, Dongle, Wu, Huan, She, Mingxu, Wu, Da, Shu, Anping, Dong, Hongchang, Lai, Baode, Sun   +7 more
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Shock-induced amorphization in medium entropy alloy CoCrNi

Scripta Materialia, 2022
Abstract We perform molecular dynamics simulations to investigate shock-induced amorphization in CoCrNi, a medium entropy alloy (MEA) and its mean-field variant without lattice distortion. We show that a critical velocity exists above which amorphization occurs. At a low shock velocity of 800 m/s, dislocation slip and twins dominate and amorphization
Wu-Rong Jian, Zhuocheng Xie, Shuozhi Xu, Xiaohu Yao, Irene J. Beyerlein   +4 more
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Dynamic deformation behavior of a FeCrNi medium entropy alloy

Journal of Materials Science & Technology, 2022
Abstract Deformation behavior of a FeCrNi medium entropy alloy (MEA) prepared by powder metallurgy (P/M) method was investigated over a wide range of strain rates. The FeCrNi MEA exhibits high strain-hardening ability, which can be attributed to the multiple deformation mechanisms, including dislocation slip, deformation induced stacking fault and ...
Ao Fu, Bin Liu, Zezhou Li, Bingfeng Wang, Yuankui Cao, Yong Liu   +5 more
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Medium entropy alloys for biomedical applications

High entropy alloys (HEAs) is a rapidly emerging class of metallic materials consisting of four or more elements in equimolar or quasi-equimolar compositions. These alloys often have simple crystal structures and tailorable properties attracting significant interest for different applications.
Zhang, Jiacheng, Stiehler, Martin, Syed, Adnan, Jorge Jr, Alberto Moreira, Jolly, Mark, Georgarakis, Konstantinos   +5 more
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Superconductivity in high and medium entropy alloys based on MoReRu

Physica C: Superconductivity and its Applications, 2019
Abstract Hexagonal close-packed (HCP) high entropy or medium entropy alloys (HEAs or MEAs) based on alterations of the ternary superconductor Mo.33Re.33Ru.33 (valence electron count VEC = 7/atom) are tested for their potential superconductivity. Quaternary Mo.25Re.25Ru.25Rh.25 has VEC 7.5 and is superconducting at 2.5 K, implying that its electron ...
Yea-Shine Lee, Robert J. Cava
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