期刊
SCRIPTA MATERIALIA
卷 184, 期 -, 页码 12-18出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2020.03.036
关键词
Bainitic steel; High cycle fatigue; Retained austenite; Fatigue crack initiation; Small crack
类别
资金
- National Natural Science Foundation of China [51771014, U1760104]
- Natural Science Foundation of Beijing Municipality [2172047]
- National Key Technologies Research and Development Program of China [2017YFB0304500]
We describe here the distinct high cycle fatigue properties of advanced bainitic steels to elucidate the significant role of retained austenite with different morphologies on sub-surface fatigue crack initiation process. The inter-plate film-like retained austenite at the straight front of small crack tip transformed to martensite, leading to the arrest of small crack growth and altered the active slip systems. However, the blocky retained austenite or martensite/austenite islands located at prior austenite grain boundaries induced intergranular fatigue cracking because of ease of activation of slip in retained austenite. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据