Crack closure effects on fatigue crack growth thresholds and remaining life in an HSLA steel

被引：2
|
作者：
Todd, JA
Chen, L
Yankov, EY
Mostovoy, S
机构：
[1] TEXAS INSTRUMENTS INC, ATTLEBORO, MA USA
[2] A FINKL & SONS, CHICAGO, IL 60616 USA
来源：
JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME | 1997年 / 119卷 / 01期
关键词：
D O I：
10.1115/1.2842264
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The effects of crack closure on the near-threshold corrosion fatigue crack growth behavior of Mil S-24645 HSLA steel and its weld metal have been investigated in air, ASTM seawater at the free corrosion potential, and ASTM seawater at -0.8V and -1.0V (SCE) using frequencies of 10, 2, and 0.2 Hz, and a stress ratio, R = 0.1. Remaining life, in the presence and absence of crack closure, has been estimated as a function of applied stress range for a structure containing a 3-nm-deep surface semi-elliptical flaw.
引用
收藏
页码：37 / 44
页数：8
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