深冷处理对低碳高合金马氏体轴承钢力学性能及组织的影响

李东辉,李志敏,肖茂果,李绍宏,赵昆渝,杨卯生

Effect of Deep Cryogenic Treatment on Mechanical Property and Microstructure of a Low Carbon High Alloy Martensitic Bearing Steel during Tempering

Donghui LI,Zhimin LI,Maoguo XIAO,Shaohong LI,Kunyu ZHAO,Maosheng YANG

表2 不同热处理工艺处理后实验钢的硬度值

Table 2 Hardness of tested steel after different heat treatment processes

Heat treatment processes Hardness (HRC) Quenching (Q) at 1050℃ 39.00 Quenching at 1050℃+deep cryogenic treatment (QC) 20 h 45.50 Quenching at 1050℃+ tempering 100 h (QT) at 510℃ 52.00 Quenching at 1050℃+deep cryogenic treatment 20 h+tempering 100 h at 510℃ (QCT) 55.50