Effect of microfissures on fatigue properties of austenitic stainless steel weld metals

被引：1

作者：

Cui, Y ^{[1
]}

Lundin, CD ^{[1
]}

机构：

[1] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

来源：

MATERIALS LETTERS | 2005年 / 59卷 / 23期

关键词：

austenitic stainless steel; welding; fatigue; bending test; microfissures;

D O I：

10.1016/j.matlet.2004.07.066

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High-cycle tension-tension fatigue testing with a 0.1 stress ratio at a frequency of 20 Hz (load control at ambient temperature) was conducted on 316L stainless steel weld metals with and without microfissures. The test results show that microfissures (hot cracking) significantly decrease the fatigue properties in austenitic stainless steel weld metals. The initiation of failure for microfissure-containing samples is linked to the microfissures which show hot cracking characteristics; a smooth flowed pattern on the fissure surface. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：2942 / 2947

页数：6