Failure of 304 stainless bellows expansion joint

被引：30

作者：

Guan, KS ^{[1
]}

Zhang, XH

Gu, XD

Cai, LZ

Xu, H

Wang, ZW

机构：

[1] E China Univ Sci & Technol, Res Inst Proc Equipment & Pressure Vessel, Shanghai 200237, Peoples R China

[2] Wujing Chem Co Ltd, Shanghai, Peoples R China

[3] Shanghai Refinery Co, Shanghai, Peoples R China

来源：

ENGINEERING FAILURE ANALYSIS | 2005年 / 12卷 / 03期

关键词：

stress corrosion cracking; stainless steel; bellow expansion joint; hydrogen damage; cracks; strain induced martensite;

D O I：

10.1016/j.engfailanal.2004.05.007

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The failure of a bellow expansion joint of 304 stainless steel has been analysed. Stress corrosion cracking (SCC) caused by wet hydrogen sulfide was responsible for the failure. Observation of metallographic sections indicated that the crack is transgranular SCC (TGSCC) with cracking in a direction perpendicular to axial stress. Scanning electron microscopy (SEM) analysis of the fracture surface showed that the cracks are cleavage and quasi-cleavage with obvious fan-shaped marking and branched propagation, which indicated that the cracking mode is hydrogen-induced cracking (HIC). Metallographic and SEM analysis showed strain-induced martensite transformed from austenite during the cold working process. This resulted in a considerable susceptibility to sulfide stress corrosion cracking (SSCC). The quantitative analysis results of XRD indicated that the content of martensite was up to 44%. The location of HIC at the expansion joint located at crests with maximum cold work deformation and hardness. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：387 / 399

页数：13

共 17 条

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ABHAY KJ, 2003, ENG FAIL ANAL, P699

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