| A semi-quantitative explanation of the cold dwell effect in titanium alloys | |
| Xi, Guoqiang1,2; Lei, Jiafeng1,2; Qiu, Jianke1; Ma, Yingjie1; Yang, Rui1,2 | |
| Corresponding Author | Lei, Jiafeng(jflei@imr.ac.cn) |
| 2020-09-01 | |
| Source Publication | MATERIALS & DESIGN
 |
| ISSN | 0264-1275 |
| Volume | 194Pages:12 |
| Abstract | 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. |
| Keyword | Titanium alloys Cold dwell effect Plastic strain Hysteresis energy density Fatigue life prediction |
| Funding Organization | National Natural Science Foundation of China ; National Key R&D Program of China |
| DOI | 10.1016/j.matdes.2020.108909 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51701219] ; National Key R&D Program of China[2016YFC0304200] ; National Key R&D Program of China[2017YFC0305501] |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| WOS ID | WOS:000571737900003 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/140599 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Lei, Jiafeng |
| Affiliation | 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 |
| Recommended Citation 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. |
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