Grain boundary relaxation behavior and phase stability of AlCrTiVx (x=0, 0.5 and 1) high-entropy alloys

doi:10.1016/j.scriptamat.2021.114144

	Grain boundary relaxation behavior and phase stability of AlCrTiVx (x=0, 0.5 and 1) high-entropy alloys
	Sun, Meng 1; Liu, Xueqing 1,2; Jiang, Weibin 1; Lei, Yawei 1; Ke, Jiangang 1,2; Liu, Rui 1; Wang, Xianping 1; Wu, Xuebang 1; Fang, Qianfeng 1; Liu, Changsong 1
刊名	SCRIPTA MATERIALIA
	2021-11-01
卷号	204
关键词	AlCrTiV alloys Internal friction Mixing entropy Grain boundary relaxation
ISSN号	1359-6462
DOI	10.1016/j.scriptamat.2021.114144
通讯作者	Wang, Xianping(xpwang@issp.ac.cn) ; Fang, Qianfeng(qffang@issp.ac.cn)
英文摘要	The defect relaxation behavior of AlCrTiVx (x = 0, 0.5, and 1) high entropy alloys was reported in this paper. A pronounced internal friction (IF) peak superimposing on a monotonously increasing high-temperature background (HTBG) was observed in all samples, which was ascribed to grain boundary peak. The activation energy of grain boundary relaxation increases with the increasing V content, implying an increasing complexity and difficulty of atomic diffusion with the increasing mixing entropy. After annealing at 1100 degrees C for 5 h, the HTBG of AlCrTiV alloy abnormally increases, which was attributed to the appearance of misfit dislocations induced by precipitation of nano-sized Ti-rich phases as confirmed by microstructure analysis. These findings may provide a new degree of freedom for evaluating and designing high entropy alloys with high thermal stability. (C) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China[U1967211] ; National Natural Science Foundation of China[51971212] ; National Natural Science Foundation of China[51801203] ; National Natural Science Foundation of China[51971213] ; National Key Research and Development Program of China[2017YFA0402800]
WOS关键词	INTERNAL-FRICTION ; MICROSTRUCTURE
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000690441400023
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/125241]
专题	中国科学院合肥物质科学研究院
通讯作者	Wang, Xianping; Fang, Qianfeng
作者单位	1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, HFIPS, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Sun, Meng,Liu, Xueqing,Jiang, Weibin,et al. Grain boundary relaxation behavior and phase stability of AlCrTiVx (x=0, 0.5 and 1) high-entropy alloys[J]. SCRIPTA MATERIALIA,2021,204.
APA	Sun, Meng.,Liu, Xueqing.,Jiang, Weibin.,Lei, Yawei.,Ke, Jiangang.,...&Liu, Changsong.(2021).Grain boundary relaxation behavior and phase stability of AlCrTiVx (x=0, 0.5 and 1) high-entropy alloys.SCRIPTA MATERIALIA,204.
MLA	Sun, Meng,et al."Grain boundary relaxation behavior and phase stability of AlCrTiVx (x=0, 0.5 and 1) high-entropy alloys".SCRIPTA MATERIALIA 204(2021).