Fatigue behavior on weldment of austenitic stainless steel for ITER vacuum vessel

被引：2

作者：

Nishi, H

Eto, M

Tachibana, K

Koizumi, K

Nakahira, M

Takahashi, H

机构：

[1] Japan Atom Energy Res Inst, Tokai Res Estab, Dept Nucl Energy Syst, Tokai, Ibaraki 3191195, Japan

[2] JAERI, Washington, DC 20006 USA

[3] JAERI, Naka Fus Res Estab, Naka, Ibaraki 3110193, Japan

来源：

FUSION ENGINEERING AND DESIGN | 2001年 / 58-59卷

关键词：

ITER; vacuum vessel; weldment; incomplete penetration; fatigue strength; fatigue crack propagation rate; fracture mechanics;

D O I：

10.1016/S0920-3796(01)00490-2

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Fatigue test of weldment of 316L stainless steel with an artificial incomplete penetration in weld root was performed to investigate effect of the incomplete penetration on fatigue behavior and fatigue strength. Fatigue crack propagation test of weld metal was also carried out to compare with that of weldment and to evaluate the fatigue lives of weldment based on fracture mechanics. As the results, the incomplete penetration behaved as a crack and most of total fatigue lives for the weldment were crack propagation lives. The crack propagation rates of weldment were in accordance with those of the weld metal. The fatigue strength of the weldment was considerably lower than that of smooth specimen. The effect of incomplete penetration on the fatigue strength of weldment is a serious problem. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：869 / 873

页数：5

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