蒸压釜釜盖开裂失效分析
Failure Analysis on Cracking of Autoclave Cover
潘安霞, 师红旗, 丁毅, 马立群
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作者单位:南京工业大学 材料科学与工程学院, 江苏 南京 210009
中文关键字:321不锈钢; 蒸压釜; 应力腐蚀开裂
英文关键字:321 stainless steel; autoclave; stress corrosion cracking
中文摘要:采用宏微观组织分析、化学成分分析、SEM断口形貌分析、EDS腐蚀产物化学成分分析等手段,分析了321不锈钢釜盖开裂的原因。结果表明,该釜盖的开裂属于氯化物应力腐蚀开裂,蒸压釜的工作介质和工作压力共同导致了釜盖的开裂,并提出了相应的改进措施。
英文摘要:The cracking of autoclave cover was analyzed by morphology and microstructure analysis, SEM micro-morphology of fracture surface, EDS corrosion products analysis. The results show that the cracking of autoclave cover is attributed to stress corrosion cracking. Working stress and working fluid of the autoclave cover lead to the cracking of the autoclave cover jointly. Finally, the relative protection countermeasures are proposed.