A semi-quantitative explanation of the cold dwell effect in titanium alloys

doi:10.1016/j.matdes.2020.108909

CORC > 金属研究所 > 中国科学院金属研究所

	A semi-quantitative explanation of the cold dwell effect in titanium alloys
	Xi, Guoqiang 1,2; Lei, Jiafeng 1,2; Qiu, Jianke 1; Ma, Yingjie 1; Yang, Rui 1,2
刊名	MATERIALS & DESIGN
	2020-09-01
卷号	194 页码:12
关键词	Titanium alloys Cold dwell effect Plastic strain Hysteresis energy density Fatigue life prediction
ISSN号	0264-1275
DOI	10.1016/j.matdes.2020.108909
通讯作者	Lei, Jiafeng(jflei@imr.ac.cn)
英文摘要	Cold dwell fatigue has become one critical issue in titanium industry over the past decades. Though some reports have emphasized the importance of time-dependent plastic strain on cold dwell effect in titanium alloys, the mathematical relationship between plastic strain and fatigue life has never been discussed because plastic strain changes continuously no matter in normal cyclic fatigue or dwell fatigue. In this paper, a series of fatigue tests under constant plastic strain is designed to investigate the mathematical relationship between plastic strain and fatigue life in titanium alloys at room temperature in air. Results show that plastic strain has a definitely detrimental effect on fatigue life in titanium alloys. Different from the traditional qualitative mechanisms, one semi-quantitative explanation for cold dwell effect in titanium alloys is proposed by introducing hysteresis energy density.
资助项目	National Natural Science Foundation of China[51701219] ; National Key R&D Program of China[2016YFC0304200] ; National Key R&D Program of China[2017YFC0305501]
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000571737900003
资助机构	National Natural Science Foundation of China ; National Key R&D Program of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/140598]
专题	金属研究所_中国科学院金属研究所
通讯作者	Lei, Jiafeng
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Xi, Guoqiang,Lei, Jiafeng,Qiu, Jianke,et al. A semi-quantitative explanation of the cold dwell effect in titanium alloys[J]. MATERIALS & DESIGN,2020,194:12.
APA	Xi, Guoqiang,Lei, Jiafeng,Qiu, Jianke,Ma, Yingjie,&Yang, Rui.(2020).A semi-quantitative explanation of the cold dwell effect in titanium alloys.MATERIALS & DESIGN,194,12.
MLA	Xi, Guoqiang,et al."A semi-quantitative explanation of the cold dwell effect in titanium alloys".MATERIALS & DESIGN 194(2020):12.