Effect of stress ratio on very high cycle fatigue properties of Ti-10V-2Fe-3Al alloy with duplex microstructure

doi:10.1016/j.jmst.2017.11.036

IMR OpenIR

	Effect of stress ratio on very high cycle fatigue properties of Ti-10V-2Fe-3Al alloy with duplex microstructure
	Wu, Ying 1; Liu, Jianrong 1; Wang, Hao 1; Guan, Shaoxuan 1; Yang, Rui 1; Xiang, Hongfu 2
通讯作者	Wu, Ying(wuying@imr.ac.cn) ; Yang, Rui(ryang@imr.ac.cn)
	2018-07-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	34 期号:7 页码:1189-1195
摘要	In fatigue critical applications, Ti-10V-2Fe-3Al alloy components are expected to endure cyclic loading with cycles above 10(9). To assess their operating safety, S-N relations of Ti-10V-2Fe-3Al alloy in very high cycle fatigue (VHCF) regime are of concern and have been investigated in this work. Fatigue behavior including S-N curves and crack initiation mechanisms is reported. Two transitions of fatigue crack initiation mechanism, from internal crack initiation to surface crack initiation and from alpha(p) cleavage to alpha(s)/beta decohesion, occur when the stress ratio (R) and stress level are reduced. Fatigue limits exist at N-f = 6 x 10(7) cycles for all stress ratios except for 0.5. In the VHCF regime two kinds of internal crack initiation mechanisms exist, i.e., coalescence of cluster of alpha(p) facets and alpha(s)/beta decohesion. Their mutual competition depends on the stress ratio and can be interpreted in terms of different stress character required for promotion on different internal crack initiation mechanism. Small crack propagation is discussed to be life controlling process under the stress ratio range from -0.5 to 0.1 during VHCF regime while under the stress ratio 0.5 VHCF, life almost refers to the life required for crack initiation. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Ti-10V-2Fe-3Al alloy Very high cycle fatigue S-N curve Fatigue crack initiation Life controlling process
DOI	10.1016/j.jmst.2017.11.036
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000434132800016
出版者	JOURNAL MATER SCI TECHNOL
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/321006/128359
专题	中国科学院金属研究所
通讯作者	Wu, Ying; Yang, Rui
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Jiangsu Univ Sci & Technol, Natl Demonstrat Ctr Expt Mat Sci & Engn Educ, Zhenjiang 212003, Peoples R China
推荐引用方式 GB/T 7714	Wu, Ying,Liu, Jianrong,Wang, Hao,et al. Effect of stress ratio on very high cycle fatigue properties of Ti-10V-2Fe-3Al alloy with duplex microstructure[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2018,34(7):1189-1195.
APA	Wu, Ying,Liu, Jianrong,Wang, Hao,Guan, Shaoxuan,Yang, Rui,&Xiang, Hongfu.(2018).Effect of stress ratio on very high cycle fatigue properties of Ti-10V-2Fe-3Al alloy with duplex microstructure.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,34(7),1189-1195.
MLA	Wu, Ying,et al."Effect of stress ratio on very high cycle fatigue properties of Ti-10V-2Fe-3Al alloy with duplex microstructure".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 34.7(2018):1189-1195.