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The microstructures and mechanical properties of CoNiCrx medium-entropy alloys

文献类型：期刊论文

作者Wu, Haibin4; Wang, Weili4; Liu TW(刘天威)3; Yan, Pengxu4; Ren, Wei2,4; Chen, Jian1
刊名MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
出版日期2024
卷号891页码:13
ISSN号0921-5093
关键词Medium-entropy alloys Eutectic Microstructure Mechanical property Strengthening mechanism
DOI10.1016/j.msea.2023.145957
通讯作者Wang, Weili(wlwang@nwpu.edu.cn) ; Ren, Wei(renwei@xupt.edu.cn)
英文摘要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.
分类号一类
WOS关键词SOLID-SOLUTION ; PHASE-FORMATION ; HIGH-STRENGTH ; DUCTILITY ; BEHAVIOR ; DESIGN ; NANOINDENTATION ; EVOLUTION ; STRATEGY ; SUBSTRUCTURE
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]
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:001131893200001
资助机构National Natural Science Foundation of China ; Key Research and Development Program of Shaanxi Province
其他责任者Wang, Weili ; Ren, Wei
源URL[http://dspace.imech.ac.cn/handle/311007/94006]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Xian Technol Univ, Sch Mat Sci & Chem Engn, Xian 710021, Peoples R China
2.Xian Univ Posts & Telecommun, Sch Sci, Xian 710121, Peoples R China;
3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China;
4.Northwestern Polytech Univ, Sch Phys Sci & Technol, Xian 710072, 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.

入库方式： OAI收割

来源：力学研究所

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