摘要
采用化学成分分析、硬度测试以及宏观和微观断口分析等方法对60Si2MnA钢盘簧失效原因进行了分析。结果表明,失效弹簧断裂源位于弹簧内侧,断口形貌呈典型的沿晶脆性断裂;组织为回火托氏体,其硬度偏高,清洗过程中由于氢的渗入致使发生氢致脆断裂。
Failure cause of 60Si2MnA steel coil spring was analyzed by using chemical composition analysis,hardness measurement and macroscopic and microscopic fracture analysis. The results show that the fracture originates from the spring inner side,and the fracture morphology is intergranular brittle fracture. The microstructure is tempered troostite and its hardness is higher that penetrated by hydrogen during pickling process,which result in hydrogen induced brittle fracture.
出处
《金属热处理》
CAS
CSCD
北大核心
2014年第12期156-158,共3页
Heat Treatment of Metals
