Failure investigation of stainless steel adaptor

被引：0

作者：

Jha A.K. ^{[1
]}

Sreekumar K. ^{[2
]}

Sinha P.P. ^{[3
]}

机构：

[1] Materials Characterisation Division, Vikram Sarabhai Space Centre, Indian Space Research Organisation

[2] Materials and Metallurgy Group, Vikram Sarabhai Space Centre, Indian Space Research Organisation

[3] Materials and Mechanical Entity, Vikram Sarabhai Space Centre, Indian Space Research Organisation

来源：

Journal of Failure Analysis and Prevention | 2011年 / 11卷 / 2期

关键词：

Anodic dissolution of chromium-depleted region; Austenitic stainless steel; Failure analysis; Sensitization;

D O I：

10.1007/s11668-010-9425-9

中图分类号：

学科分类号：

摘要：

Adaptors used in check valve inlet pressure sensors were fabricated from austenitic stainless steel. Recently, during pretest operation and during hydrogen pressurization of an engine, a leak was noticed through the adaptor. Subsequent to disassembly, the leak was attributed to a crack in the adaptor. Detailed metallurgical investigations were carried out to understand the cause of cracking. Synergistic effect of chloride ions present in marine environment, the presence of residual stresses and sensitized grains of the material led to intergranular stress corrosion cracking. This article highlights details of investigation. © ASM International 2011.

引用

页码：129 / 133

页数：4

共 5 条

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