Effect of grain size on fatigue cracking at twin boundaries in a CoCrFeMnNi high-entropy alloy

doi:10.1016/j.jmst.2019.09.010

IMR OpenIR

	Effect of grain size on fatigue cracking at twin boundaries in a CoCrFeMnNi high-entropy alloy
	Wang, A. G.1; An, X. H.1; Gu, J.2; Wang, X. G.3; Li, L. L.3,4; Li, W. L.1; Song, M.2; Duan, Q. Q.3; Zhang, Z. F.3; Liao, X. Z.1
通讯作者	An, X. H.(xianghai.an@sydney.edu.au) ; Song, M.(msong@csu.edu.cn) ; Liao, X. Z.(xiaozhou.liao@sydney.edu.au)
	2020-02-15
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	39 页码:1-6
摘要	The fatigue cracking behavior at twin boundaries (TBs) in a CoCrFeMnNi high-entropy alloy with three different grain sizes was systematically investigated under low-cycle fatigue. Irrespective of grain size, the change from slip band cracking to TB cracking occurred with increasing the difference in the Schmid factors (DSF) between matrix and twin. However, the required critical DSF for the transition of the dominant cracking mode decreases with decreasing grain size due to the reduced slip band spacing that increases the impingement sites on the TBs and facilitates the coalescence of defects and voids to initiate TB cracks. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	High-entropy alloy Fatigue cracking Twin boundary Slip band Grain size
资助者	Australian Research Council ; Open Foundation of State Key Laboratory of Powder Metallurgy at Central South University ; National Natural Science Foundation of China ; University of Sydney under the Robinson Fellowship Scheme
DOI	10.1016/j.jmst.2019.09.010
收录类别	SCI
语种	英语
资助项目	Australian Research Council[DE170100053] ; Australian Research Council[DP190102243] ; Open Foundation of State Key Laboratory of Powder Metallurgy at Central South University ; National Natural Science Foundation of China[51771229] ; University of Sydney under the Robinson Fellowship Scheme
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000510492000001
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：72[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/321006/137163
专题	中国科学院金属研究所
通讯作者	An, X. H.; Song, M.; Liao, X. Z.
作者单位	1.Univ Sydne0y, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW, Australia 2.Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Mat Fatigue & Fracture Div, Shenyang 110016, Peoples R China 4.Max Planck Inst Eisenforsch GmbH, Max Planck Str 1, D-40237 Dusseldorf, Germany
推荐引用方式 GB/T 7714	Wang, A. G.,An, X. H.,Gu, J.,et al. Effect of grain size on fatigue cracking at twin boundaries in a CoCrFeMnNi high-entropy alloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2020,39:1-6.
APA	Wang, A. G..,An, X. H..,Gu, J..,Wang, X. G..,Li, L. L..,...&Liao, X. Z..(2020).Effect of grain size on fatigue cracking at twin boundaries in a CoCrFeMnNi high-entropy alloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,39,1-6.
MLA	Wang, A. G.,et al."Effect of grain size on fatigue cracking at twin boundaries in a CoCrFeMnNi high-entropy alloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 39(2020):1-6.