Fatigue crack growth model for a thin steel plate containing hydrogen

被引：6
|
作者：
Holobut, P. [1 ]
机构：
[1] Polish Acad Sci, Inst Fundamental Technol Res, PL-02106 Warsaw, Poland
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2010年 / 32卷 / 12期
关键词：
Hydrogen fatigue; Crack growth model; Hydrogen embrittlement; Residual stresses; AUSTENITIC STAINLESS-STEEL; ASSISTED CRACKING; TRANSPORT; BEHAVIOR; FRACTURE; TIP;
D O I：
10.1016/j.ijfatigue.2010.06.005
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A method of predicting fatigue crack growth in hydrogen-charged thin steel plates is proposed. It consists in computing modified stress intensity factors which reflect the presence of hydrogen, and using them in a fatigue crack growth equation for an uncharged plate. The modification accounts for both, hydrogen embrittlement of crack tips and hydrogen-induced residual stresses in the plate. The new stress intensity factors are derived for two special cases - uniform and stationary hydrogen distribution in the plate. With their use bounds are established on the rate of hydrogen-assisted fatigue crack growth. Theoretical results are illustrated by numerical calculations. (c) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1895 / 1903
页数：9
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