Fatigue Crack Thresholds Significantly Affected by Thermo-Mechanical Loading Histories in An Austenitic and A Ferritic Low alloy Steel

被引：0

作者：

Okazaki, M. ^{[1
]}

Muzvidziwa, M. ^{[1
]}

Iwasaki, R. ^{[1
]}

Kasahara, N. ^{[2
]}

机构：

[1] Nagaoka Univ Technol, Nagaoka, Niigata 94021, Japan

[2] Univ Tokyo, Tokyo, Japan

来源：

11TH INTERNATIONAL FATIGUE CONGRESS, PTS 1 AND 2 | 2014年 / 891-892卷

关键词：

High cycle thermal fatigue failure; Thermo-mechanical loading history; Fatigue threshold; Crack wake; Welding repair; High-cycle and low-cycle fatigue interaction; PROPAGATION; CLOSURE;

D O I：

10.4028/www.scientific.net/AMR.891-892.1295

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

High cycle thermal fatigue failure of pipes induced by fluid temperature change is one of the interdisciplinary issues to be concerned for long term structural reliability of high temperature components in energy systems. In order to establish basic understanding on this issue, fatigue crack propagation tests were carried out in a low alloy steel and an austenitic stainless steel under typical thermal and thermo-mechanical histories. It was shown that the thermo-mechanical histories introduced unique effects to the prior fatigue crack wake, resulting in significant change in the fatigue crack threshold.

引用

页码：1295 / +

页数：3

共 12 条

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