Excellent tensile property and its mechanism in Al0.3CoCrFeNi high-entropy alloy via thermo-mechanical treatment

doi:10.1016/j.jallcom.2021.163218

IMR OpenIR

	Excellent tensile property and its mechanism in Al0.3CoCrFeNi high-entropy alloy via thermo-mechanical treatment
	Wang, Xiaodi 1; Zhang, Zhe 1; Wang, Zhengbin 2; Ren, Xuechong 1
通讯作者	Wang, Xiaodi(wangxiaodi@ustb.edu.cn) ; Ren, Xuechong(xcren@ustb.edu.cn)
	2022-03-15
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	897 页码:10
摘要	Al0.3CoCrFeNi is one of the widely studied high-entropy alloys (HEAs) due to the superior properties; however, its strength at room temperature is not satisfactory. The thermo-mechanical method was usually used to tune the mechanical property of materials. Here the as-cast Al0.3CoCrFeNi HEA was cold rolled and subsequently annealed for various times. The microstructural variation was characterized by X-ray diffraction, electron backscatter diffraction and transmission electron microscopy and the mechanical properties were estimated by microhardness and tension tests. It was found that the shorter annealing time led to a finer grain size and higher hardness. Besides, the yield strength of similar to 467 MPa, ultimate tensile strength of similar to 830 MPa and tensile elongation of similar to 48% were achieved in the thermo-mechanically processed alloy, which was comparable with or even a little higher than the previously reported data. The excellent combination of strength and ductility in this alloy was mainly ascribed to the combined action of residual dislocations, refined grains, and annealing and deformation twins in the dislocation motion. The calculated results of the contributions from different strengthening mechanisms to yield strength were well consistent with the experimental data. (C) 2021 Elsevier B.V. All rights reserved.
关键词	High-entropy alloy Annealing treatment Grain size Tensile property Residual dislocation Twin
资助者	Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China (NSFC)
DOI	10.1016/j.jallcom.2021.163218
收录类别	SCI
语种	英语
资助项目	Fundamental Research Funds for the Central Universities[FRF-TP-19-011A1] ; National Natural Science Foundation of China (NSFC)[52101065]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000749472200003
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：21[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/321006/173570
专题	中国科学院金属研究所
通讯作者	Wang, Xiaodi; Ren, Xuechong
作者单位	1.Univ Sci & Technol Beijing, Natl Ctr Mat Serv Safety, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xiaodi,Zhang, Zhe,Wang, Zhengbin,et al. Excellent tensile property and its mechanism in Al0.3CoCrFeNi high-entropy alloy via thermo-mechanical treatment[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,897:10.
APA	Wang, Xiaodi,Zhang, Zhe,Wang, Zhengbin,&Ren, Xuechong.(2022).Excellent tensile property and its mechanism in Al0.3CoCrFeNi high-entropy alloy via thermo-mechanical treatment.JOURNAL OF ALLOYS AND COMPOUNDS,897,10.
MLA	Wang, Xiaodi,et al."Excellent tensile property and its mechanism in Al0.3CoCrFeNi high-entropy alloy via thermo-mechanical treatment".JOURNAL OF ALLOYS AND COMPOUNDS 897(2022):10.