摘要
观察和测试了5 Cr2NiMoVSi钢摩擦环试样真空淬火和两次回火后的组织和硬度。结果表明,5Cr2NiMoVSi钢试样经真空热处理后,组织为回火马氏体＋回火下贝氏体＋少量残留奥氏体＋共晶碳化物;显微组织较均匀,硬度52~54 HRC,满足技术要求。
Microstructure and hardness of 5Cr2 NiMoVSi steel friction rings specimens after vacuum quenching and twice tempering were tested.The results show that the microstructure of 5Cr2 NiMoVSi steel after vacuum heat treatment is tempered martensite ＋ tempered lower bainite ＋ small amount of retained austenite and eutectic carbides,microstructure is more uniform and the hardness is in the range of 52-54 HRC,that meet the technical requirements.
出处
《金属热处理》
CAS
CSCD
北大核心
2015年第12期122-124,共3页
Heat Treatment of Metals
