Fatigue of martensite-ferrite high strength low-alloy dual phase steels

被引:28
|
作者
Wang, ZG [1 ]
Al, SH [1 ]
机构
[1] Acad Sinica, Inst Met Res, State Key Lab Fatigue & Fracture Mat, Shenyang 110015, Peoples R China
关键词
dual-phase steel; low cycle fatigue; microstructure; fatigue crack propagation;
D O I
10.2355/isijinternational.39.747
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
Fatigue tests were carried out with as-rolled and heat-treated Si-Mn-Cr-Mo martensite-ferrite dual-phase steels at room temperature in air and 3.5% NaCl solution. The effects of duplex microstructural morphologies, martensite contents and environmental conditions on fatigue stress-life, cyclic deformation behavior, fatigue crack initiation and near-threshold fatigue crack growth were investigated. The influence of prestrain and ageing on fatigue threshold was also studied.
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页码:747 / 759
页数:13
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