High-cycle bending fatigue behaviour of nanostructured bainitic steel

被引：54
作者：
Yang, J. [1 ]
Wang, T. S. [1 ]
Zhang, B. [1 ]
Zhang, F. C. [1 ]
机构：
[1] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China
来源：
SCRIPTA MATERIALIA | 2012年 / 66卷 / 06期
关键词：
Bainitic steels; Nanostructure; Retained austenite; High-cycle fatigue; GRAIN-STRUCTURE;
D O I：
10.1016/j.scriptamat.2011.11.033
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The high-cycle bending fatigue behaviour of high-carbon Si-Al-rich steel with a nanostructured bainitic microstructure was studied. A fatigue limit for no failure in 107 cycles of the nanostructured bainitic steel is determined not only by hardness or strength, which determines the fatigue limit of conventional high- and ultrahigh-strength low-alloy steels, but also by microstructure. Retained austenite and secondary cracks in fatigue fractures of the nanostructured bainitic steel have positive effects on the fatigue property. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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收藏
页码：363 / 366
页数：4
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