摘要
对GCr15钢球实施马氏体淬火后常规回火、240℃高温回火和等温贝氏体淬火3种热处理工艺,分别得到常规马氏体、高温回火马氏体和下贝氏体3种组织,试验研究了这3种组织的性能。结果表明,10 mm的GCr15钢球,高温回火马氏体组织与下贝氏体组织的压碎载荷值相当,且明显高于常规马氏体组织的压碎载荷值;下贝氏体组织的抗回火性能明显优于常规马氏体组织的抗回火性能。
The conventional martensite,high temperature tempering martensite and lower bainite are obtained respectively after conventional tempering after martensite quenching,high temperature tempering under 240℃and isothermal bainite quenching of steel balls made of GCr15.The properties of three structures are studied experimentally.The results show that the crushing load of high temperature tempering martensite structure is equivalent to that of lower bainite structure,and which is higher obviously than that of conventional martensite structure for steel balls made of GCr15 with a diameter of 10 mm.The tempering resistant performance of lower bainite structure is better than that of conventional martensite structure.
作者
欧亮龙
叶健熠
冯继伟
夏谦
OU Lianglong;YE Jianyi;FENG Jiwei;XIA Qian(Luoyang Bearing Research Institute Co., Ltd.,Luoyang 471039,China;Henan Key Laboratory of High Performance Bearing Technology,Luoyang 471039,China;Strategic Alliance for Technology Innovation in Rolling Bearing Industry,Luoyang 471039,China)
出处
《轴承》
北大核心
2019年第2期40-42,共3页
Bearing
关键词
滚动轴承
GCR15钢
常规马氏体
高温回火马氏体
下贝氏体
压碎载荷
抗回火性能
rolling bearing
steel GCr15
conventional martensite
high temperature tempering martensite
lower bainite
crushing load
tempering resistant performance
