Enhancing the fatigue property of high entropy alloy by regulating characteristics of grains and precipitates

doi:10.1016/j.ijfatigue.2023.108125

IMR OpenIR

	Enhancing the fatigue property of high entropy alloy by regulating characteristics of grains and precipitates
	Song, Shaolong 1; Wang, Xiaodi 1; Zhang, Zhe 1; Wang, Zhengbin 2; Ren, Xuechong 1; Luan, Benli 1,3
通讯作者	Wang, Xiaodi(wangxiaodi@ustb.edu.cn) ; Ren, Xuechong(xcren@ustb.edu.cn)
	2024-04-01
发表期刊	INTERNATIONAL JOURNAL OF FATIGUE
ISSN	0142-1123
卷号	181 页码:14
摘要	High entropy alloys (HEAs) are a new class of alloys with many excellent mechanical properties, having the potential as structural materials. One advantage of HEAs is the vast space for designing compositions and microstructures, which provides more possibilities to develop fatigue-resistant materials. In this study, a multiphase fine-grained microstructure was engineered through cold rolling and annealing treatment in Al0.3CoCrFeNi HEA to obtain an enhanced fatigue property. This alloy consists of FCC matrix phase with an average grain size of - 1.13 +/- 0.84 mu m, and B2 and sigma precipitates with sub-micron scale. Their phase fractions are - 90 %, - 9 % and - 1 %, respectively. Stress-life (S-N) data indicate that fatigue endurance limit and ratio in terms of stress amplitude are - 281 MPa and - 0.3, based on stress ratio of 0.1. Good fatigue property is related to high ultimate tensile strength derived from good work-hardening ability and fine microstructure. In addition, activation of deformation twins, blunting of microcracks and deflection of fatigue cracks associated with precipitates are beneficial for enhancement of fatigue resistance. The above results provide theoretical guidance on how to enhance fatigue resistance of HEAs by regulating microstructures.
关键词	High entropy alloy Precipitate Fine grain Fatigue properties Crack deflection
资助者	National Natural Science Foundation of China (NSFC) ; Beijing Natural Science Foundation ; Program of Research and Development of Science and Technology of China National Railway Group Co. Ltd.
DOI	10.1016/j.ijfatigue.2023.108125
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[52101065] ; Beijing Natural Science Foundation[2222066] ; Program of Research and Development of Science and Technology of China National Railway Group Co. Ltd.[L2021J004]
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary
WOS记录号	WOS:001152848500001
出版者	ELSEVIER SCI LTD
引用统计	被引频次：8[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/321006/183772
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 3.Western Univ, Dept Chem, London, ON N6A 5B7, Canada
推荐引用方式 GB/T 7714	Song, Shaolong,Wang, Xiaodi,Zhang, Zhe,et al. Enhancing the fatigue property of high entropy alloy by regulating characteristics of grains and precipitates[J]. INTERNATIONAL JOURNAL OF FATIGUE,2024,181:14.
APA	Song, Shaolong,Wang, Xiaodi,Zhang, Zhe,Wang, Zhengbin,Ren, Xuechong,&Luan, Benli.(2024).Enhancing the fatigue property of high entropy alloy by regulating characteristics of grains and precipitates.INTERNATIONAL JOURNAL OF FATIGUE,181,14.
MLA	Song, Shaolong,et al."Enhancing the fatigue property of high entropy alloy by regulating characteristics of grains and precipitates".INTERNATIONAL JOURNAL OF FATIGUE 181(2024):14.