Predictive fatigue crack growth law of high-strength steels

被引:2
|
作者
H.F.Li [1 ,2 ]
P.Zhang [1 ]
B.Wang [1 ]
Z.F.Zhang [1 ]
机构
[1] Laboratory of Fatigue and Fracture for Materials, Shi-changxu Innovation Center for Advanced Materials, Chinese Academy of Sciences, Institute of Metal Research
[2] State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University
基金
中国国家自然科学基金;
关键词
D O I
暂无
中图分类号
TG142.1 [钢的组织与性能];
学科分类号
080502 ;
摘要
The fatigue resistance of metallic materials is generally attributed to both strength and toughness. Unfortunately, these properties are mutually exclusive in most materials. Classical theories like Paris’ law only provide some data correlation schemes rather than a predictive capability, which cannot satisfactorily guide the anti-fatigue design. In this study, for the first time, the predictive fatigue crack growth rate law is proposed by considering the effects of both strength and toughness. Accordingly, a quantitative criterion is established for judging the fatigue crack resistance of high-strength steels. The predictive law would provide a unique view to the quantitative anti-fatigue design of metallic materials.
引用
收藏
页码:46 / 50
页数:5
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