Short fatigue crack behaviour in 316L stainless steel

被引：67

作者：

Obrtlik, K

Polak, J

Hajek, M

Vasek, A

机构：

[1] Institute of Physics of Materials, Acad. of Sci. of the Czech Republic, Žižkova 22

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 1997年 / 19卷 / 06期

关键词：

fatigue; short cracks; fatigue crack growth; crack initiation; short crack growth mechanism; life prediction; 316L stainless steel;

D O I：

10.1016/S0142-1123(97)00005-4

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Short crack growth mechanism and kinetics were studied under symmetrical push-pull straining in austenitic stainless 316L steel. Fatigue cracks initiated along strain localized areas and crack linking was the main mechanism of the early crack growth. Two different regimes in short crack growth rate were identified. Based on the experimental data, the quantitative description of crack propagation rates was obtained for short and long cracks. The integration of this equation can be used to predict the fatigue life or residual life and to evaluate the number of cycles necessary to reach a given crack length. (C) 1997 Published by Elsevier Science Ltd.

引用

页码：471 / 475

页数：5

共 12 条

[1]

HEINZ A, SHORT FATIGUE CRACKS, P31

[2] RELEVANCE OF THE SMALL CRACK PROBLEM TO LIFETIME PREDICTION IN GAS-TURBINES [J].