Strain-induced martensitic transformation in fatigue crack tip zone for a high strength steel

被引：84
作者：
Huo, CY
Gao, HL [1 ]
机构：
[1] Xian Shiyou Univ, Dept Mat Sci & Engn, Shaanxi 710065, Peoples R China
[2] Xian Jiaotong Univ, Inst Mat Sci & Engn, Xian 710049, Peoples R China
来源：
MATERIALS CHARACTERIZATION | 2005年 / 55卷 / 01期
基金：
中国国家自然科学基金;
关键词：
high strength steel; fatigue crack; strain-induced transformation;
D O I：
10.1016/j.matchar.2005.02.004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The stability of retained austenite within the fatigue plastic zone of a high strength steel was studied through use of transmission electron microscopy with thin foil specimens containing fatigue cracks. The results show that retained austenite inside the plastic zone at the fatigue crack tip has been transformed into martensite due to plastic deformation. Because of the effect of the energy absorbed and crack closure in the process of strain-induced martensitic transformation, the propagation rate of fatigue crack can be reduced. (c) 2005 Elsevier Inc. All rights reserved.
引用
收藏
页码：12 / 18
页数：7
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