Composition design study of strong and ductile Mo-alloyed CoCrNi medium-entropy alloys

doi:10.1016/j.jmst.2023.10.050

IMR OpenIR

	Composition design study of strong and ductile Mo-alloyed CoCrNi medium-entropy alloys
	Yan, J. X.1; Qin, J. Y.1; Liu, J. H.2; Chen, H.1; Huang, Y. H.1; Liu, M.1; Xia, C. H.1; Wang, F.1; Cui, X. D.1,3; Yang, J. B.4; Zhang, Z. F.4
通讯作者	Cui, X. D.(xudcui@caep.cn) ; Yang, J. B.(jbyang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
	2024-07-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	186 页码:37-47
摘要	The assistance of alloying elements provides enormous opportunities for the discovery of highperformance face-centered cubic (FCC) medium-entropy alloys (MEAs). In this work, the influence of alloying element Mo on the phase stability, stacking fault energy (SFE), deformation mechanisms, lattice distortion, and mechanical properties of (CoCrNi)(100-x )Mox (0 <= x <= 10) MEAs was synthetically explored with the first-principles calculations. It indicates that the FCC phase remains metastable at 0 K, and its stability degenerates with increasing Mo content. The monotonous decrease of SFE is revealed with the rise of Mo content, which promotes the activation of stacking faults, deformation twinning, or martensitic transformation. Raising Mo content also causes the aggravation of lattice distortion and thus triggers intense solid solution strengthening. Significantly, the essential criterion for the composition design of FCC (CoCrNi)100-x Mo MEAs with superior strength-ductility combination was established based on the synergistic effects between multiple deformation mechanisms and solid solution strengthening. According to the criterion, the optimal composition is predetermined as (CoCrNi)(93) Mo-7 MEA. The criterion is proved to be effective, and it can provide valuable inspiration for the development of alloying-element reinforced FCC multi-principal element alloys. (c) 2024 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Medium-entropy alloys First-principles calculations Stacking-fault energy Solute strengthening Deformation twinning Mechanical properties
资助者	National Natural Science Foundation of China (NSFC) ; Youth Project of Science and Tech-nology Research Program of Chongqing Municipal Education Commission ; Natural Science Foundation of Chongqing ; Project of Science Foundation in Chongqing Jiaotong University
DOI	10.1016/j.jmst.2023.10.050
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[52071316] ; Youth Project of Science and Tech-nology Research Program of Chongqing Municipal Education Commission[KJQN202300755] ; Natural Science Foundation of Chongqing[cstc2021jcyj-msxmX0697] ; Project of Science Foundation in Chongqing Jiaotong University[F1210023]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001155657600001
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/183961
专题	中国科学院金属研究所
通讯作者	Cui, X. D.; Yang, J. B.; Zhang, Z. F.
作者单位	1.Chongqing Jiaotong Univ, Sch Mat Sci & Engn, Chongqing 400074, Peoples R China 2.Southwest Technol & Engn Res Inst, Chongqing 400039, Peoples R China 3.China Acad Engn Phys, Inst Chem Mat, Mianyang 621900, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Yan, J. X.,Qin, J. Y.,Liu, J. H.,et al. Composition design study of strong and ductile Mo-alloyed CoCrNi medium-entropy alloys[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2024,186:37-47.
APA	Yan, J. X..,Qin, J. Y..,Liu, J. H..,Chen, H..,Huang, Y. H..,...&Zhang, Z. F..(2024).Composition design study of strong and ductile Mo-alloyed CoCrNi medium-entropy alloys.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,186,37-47.
MLA	Yan, J. X.,et al."Composition design study of strong and ductile Mo-alloyed CoCrNi medium-entropy alloys".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 186(2024):37-47.