不锈钢冷凝管的开裂失效原因分析  

Failure Analysis on Cracking of Stainless Steel Condensation Pipe

作　　者：张耀丰[1] 陆晓峰[1] 丁毅[1] 顾伯勤[1] 

机构地区：[1]南京工业大学,江苏南京210009

出　　处：《压力容器》2003年第8期47-49,共3页Pressure Vessel Technology

摘　　要：通过金相显微组织、扫描电镜、能谱和垢样成分分析等方法对冷凝管的开裂失效原因进行了分析,得出Cl-的存在及管材中较高的冷加工残余应力和工作应力是导致奥氏体不锈钢冷凝管应力腐蚀开裂(CSCC)的主要原因,较高的工作温度(最高温度177℃)加速了冷凝管的开裂失效过程。The failure of stainless steel condensation pipe was analyzed by means of micrography, SEM,EDS and chemical composition analysis of scale in this paper. The results indicated that working stress and residual stress after cool-deforming, accompanied with the exiting of Cl-, lead to the SCC failure of pipe. High temperature (to 177℃) speeded up the failure process.

关 键 词：不锈钢 冷凝管 应力腐蚀开裂 失效 

分 类 号：TG142.31[一般工业技术—材料科学与工程]