Failure analysis of stainless steel bellows

被引：0

作者：

Shaikh, H ^{[1
]}

George, G ^{[1
]}

Khatak, HS ^{[1
]}

机构：

[1] Indira Gandhi Ctr Atom Res, Corros Sci & Technol Div, Kalpakkam 603102, Tamil Nadu, India

来源：

PRAKTISCHE METALLOGRAPHIE-PRACTICAL METALLOGRAPHY | 2001年 / 38卷 / 09期

关键词：

Steel corrosion - Residual stresses - Bellows - Stainless steel - Sodium hydroxide - Stress corrosion cracking;

D O I：

10.1515/pm-2001-380906

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Two bellow sealed valves used to control the flow of sodium in pipelines of the Component Testing Facility (CTF) at the Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam, failed prematurely. The failure of both these valves occurred by intergranular stress corrosion cracking (IGSCC) of the stainless steel bellows. This premature failure occurred in the sensitised stainless steel of the bellows due to the conjoint action of high tensile stresses, caused by superimposition of operating stresses over residual stresses, and sodium hydroxide environment which was formed by reaction between sodium and moisture in the cover gas.

引用

页码：532 / 537

页数：6

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