Fatigue endurance limit and crack front evolution in metallic glass | |
Lei XQ(雷现奇)1; 袁力超o1; Peng, Liu2; Sun CQ(孙成奇)1; Wei BC(魏炳忱)1; Wei YJ(魏宇杰)1 | |
发表期刊 | INTERNATIONAL JOURNAL OF FATIGUE |
2021-02-01 | |
卷号 | 143页码:9 |
ISSN | 0142-1123 |
摘要 | Fatigue endurance limit is a threshold stress-amplitude under which a solid subjected to a cyclic loading can sustain infinite life. Such a limit has been confirmed in ferrous materials but remains controversial in many advanced new materials, including bulk metallic glasses with superb strength. By using a combination of ultrasonic fatigue (USF) test and conventional fatigue test, we obtain the stress amplitude vs. loading cycle curve of the Vitreloy 1 (TM) metallic glass, with loading cycles up to 10(9). There is a clear fatigue endurance limit (FEL) which is about 320 MPa, and is 17% of the strength of Vitreloy 1 (TM). The residual strength of survivals after 10(9) cycles is nearly the same as those of intact samples. We demonstrate that all fatigue cracks initiate from spherical pores which are inevitable and intrinsic amid casting and fast cooling, and the fatigue crack front resembles an ellipse arc till final rapid rapture of all tested samples. The size and position of a pore can be utilized to extract the fatigue initiation threshold K-0(th), and the elliptical fatigue crack front is used to obtain the mode I fracture toughness K-IC, which are K-0(th) = 2.0 +/- 0.5MPa root m and K-IC = 18 20MPa root m for Vitreloy 1 (TM), respectively. The fatigue endurance limit and its intrinsic origin of Vitreloy 1 (TM) pave the way to understand fatigue in other metallic glasses. |
关键词 | Fatigue endurance limit Ultra-high cycle fatigue Metallic glasses Elliptical crack front Stress intensity factor |
DOI | 10.1016/j.ijfatigue.2020.106004 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000597144300004 |
WOS研究方向 | Engineering ; Materials Science |
WOS类目 | Engineering, Mechanical ; Materials Science, Multidisciplinary |
资助项目 | National Natural Science Foundation of China (NSFC) Basic Science Center for Multiscale Problems in Nonlinear Mechanics[11988102] ; NSFC[11790291] ; NSFC[11802308] ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS)[XDB22020200] ; CAS Center for Excellence in Complex System Mechanics |
项目资助者 | National Natural Science Foundation of China (NSFC) Basic Science Center for Multiscale Problems in Nonlinear Mechanics ; NSFC ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; CAS Center for Excellence in Complex System Mechanics |
论文分区 | 一类 |
力学所作者排名 | 1 |
RpAuthor | Wei, Yujie |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/85877 |
专题 | 非线性力学国家重点实验室 微重力重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; 2.Univ Sci & Technol Beijing, Natl Ctr Mat Serv Safety, Beijing 100083, Peoples R China |
推荐引用方式 GB/T 7714 | Lei XQ,袁力超o,Peng, Liu,et al. Fatigue endurance limit and crack front evolution in metallic glass[J]. INTERNATIONAL JOURNAL OF FATIGUE,2021,143:9. |
APA | 雷现奇,袁力超o,Peng, Liu,孙成奇,魏炳忱,&魏宇杰.(2021).Fatigue endurance limit and crack front evolution in metallic glass.INTERNATIONAL JOURNAL OF FATIGUE,143,9. |
MLA | 雷现奇,et al."Fatigue endurance limit and crack front evolution in metallic glass".INTERNATIONAL JOURNAL OF FATIGUE 143(2021):9. |
条目包含的文件 | 下载所有文件 | |||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Jp2021067.pdf(9123KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
Lanfanshu学术 |
Lanfanshu学术中相似的文章 |
[雷现奇]的文章 |
[袁力超o]的文章 |
[Peng, Liu]的文章 |
百度学术 |
百度学术中相似的文章 |
[雷现奇]的文章 |
[袁力超o]的文章 |
[Peng, Liu]的文章 |
必应学术 |
必应学术中相似的文章 |
[雷现奇]的文章 |
[袁力超o]的文章 |
[Peng, Liu]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论