1Cr18Ni9Ti不锈钢导管开裂原因分析
Reason Analysis for Cracking of 1Cr18Ni9Ti Stainless Steel Catheter
摘 要
1Cr18Ni9Ti不锈钢导管外场例行检查时被发现有裂纹。通过裂纹及破断口的宏、微观观察，腐蚀产物成分分析，硬度、残余应力检测等方法分析了导管开裂失效原因。结果表明：导管的开裂失效原因为应力腐蚀破裂。
导管
应力腐蚀破裂
残余应力
1Cr18Ni9Ti stainless steel
catheter
stress corrosion cracking
residual stress
Abstract
Cracks were found during routine inspection on 1Cr18Ni9Ti stainless steel catheters. Macro and micro observation of the crack and fracture, analysis of the composition of corrosion products, hardness testing and residual stress testing were used to analyze the failure seasons for catheter cracking. The results show that the reason for the catheter cracking failure was stress corrosion cracking.
中图分类号 TG115.2 DOI 10.11973/fsyfh-201712016
所属栏目 失效分析
基金项目
收稿日期 2017/7/13
修改稿日期
网络出版日期
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引用该论文: WU Junfeng. Reason Analysis for Cracking of 1Cr18Ni9Ti Stainless Steel Catheter[J]. Corrosion & Protection, 2017, 38(12): 978
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参考文献
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【2】张栋,钟培道,陶春虎,等. 失效分析[M]. 北京:国防工业出版社,2004:54-56,189-197.
【3】廖景娱. 金属构件失效分析[M]. 北京:化学工业出版社,2003:100-108.
【4】OSAMA M A,ROKURO N. On the stress corrosion cracking and hydrogen embrittlement of sensitized austenitic stainless steels in boiling saturated magnesium chloride solutions:effect of applied stress[J]. Corrosion Science,2008,50:2919-2926.
【5】ROKURO N,YASUAKI M. SCC evaluation of type 304 and 316austenitic of type 304 and 316 austenitic stainless steels in acidic chloride solutions using the slow strain rate technique[J]. Corrosion Science,2004,46:769-785.
【6】吴剑. 不锈钢的腐蚀破坏和防护技术[J]. 腐蚀与防腐,2007,18(4):38-41.
【7】张国华,李敬高. 奥氏体不锈钢应力腐蚀分析研究[J]. 焊接技术,2002,31(6):53-54.
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