The microstructures and mechanical properties of CoNiCrx medium-entropy alloys

doi:10.1016/j.msea.2023.145957

IMECH-IR > 非线性力学国家重点实验室

	The microstructures and mechanical properties of CoNiCrx medium-entropy alloys
	Wu, Haibin 1; Wang, Weili 1; Liu TW(刘天威)2 ; Yan, Pengxu 1; Ren, Wei 1,3; Chen, Jian 4
通讯作者	Wang, Weili(wlwang@nwpu.edu.cn) ; Ren, Wei(renwei@xupt.edu.cn)
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2024
卷号	891 页码:13
ISSN	0921-5093
摘要	The CoNiCrx (x = 1, 1.4, 1.8, and 2) medium-entropy alloys were synthesized by vacuum arc-melting method to systematically investigate the roles of Cr on microstructures and mechanical properties. The results of microstructural characteristics indicated that both CoNiCr and CoNiCr1.4 alloys have a single face-centered cubic (FCC) structure, while CoNiCr1.8 and CoNiCr2 alloys consist of FCC plus body-centered cubic (BCC) hypoeutectic and eutectic. The formation of FCC and BCC phases could be probably evaluated using the VEC criteria. The tested mechanical properties demonstrated that CoNiCr1.8 alloy exhibited the best comprehensive properties at room and liquid nitrogen temperatures (RT and LNT), whereas the yield strength and hardness of CoNiCr2 alloy were higher than those of other alloys, which may be mainly attributed to the second-phase strengthening and the fine and lamellar microstructure. The yield strength of CoNiCr2 alloy at RT and LNT was 3.8 and 1.9 times (514 MPa and 825 MPa) that of CoNiCr alloy. In addition, the precipitation of dense and ordered FCC (L12) phase could primarily contribute to the enhance of yield strength of CoNiCr1.4 alloy.
关键词	Medium-entropy alloys Eutectic Microstructure Mechanical property Strengthening mechanism
DOI	10.1016/j.msea.2023.145957
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001131893200001
关键词[WOS]	SOLID-SOLUTION ; PHASE-FORMATION ; HIGH-STRENGTH ; DUCTILITY ; BEHAVIOR ; DESIGN ; NANOINDENTATION ; EVOLUTION ; STRATEGY ; SUBSTRUCTURE
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助项目	National Natural Science Foundation of China[51931005] ; National Natural Science Foundation of China[52171048] ; Key Research and Development Program of Shaanxi Province[2020ZDLGY12-02]
项目资助者	National Natural Science Foundation of China ; Key Research and Development Program of Shaanxi Province
论文分区	一类
力学所作者排名	3
RpAuthor	Wang, Weili ; Ren, Wei
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/94007
专题	非线性力学国家重点实验室
作者单位	1.Northwestern Polytech Univ, Sch Phys Sci & Technol, Xian 710072, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 3.Xian Univ Posts & Telecommun, Sch Sci, Xian 710121, Peoples R China; 4.Xian Technol Univ, Sch Mat Sci & Chem Engn, Xian 710021, Peoples R China
推荐引用方式 GB/T 7714	Wu, Haibin,Wang, Weili,Liu TW,et al. The microstructures and mechanical properties of CoNiCrx medium-entropy alloys[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2024,891:13.
APA	Wu, Haibin,Wang, Weili,刘天威,Yan, Pengxu,Ren, Wei,&Chen, Jian.(2024).The microstructures and mechanical properties of CoNiCrx medium-entropy alloys.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,891,13.
MLA	Wu, Haibin,et al."The microstructures and mechanical properties of CoNiCrx medium-entropy alloys".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 891(2024):13.