Effect of Deep Cryogenic Treatment on Microstructure and Mechanical Properties of GCr15 Bearing Steel
摘 要
对GCr15轴承钢分别进行淬火+回火,淬火+回火+深冷,淬火+深冷+淬火,淬火+回火+深冷+回火处理,研究了深冷处理对GCr15轴承钢显微组织、硬度和耐磨性能的影响。结果表明:与常规淬火+回火工艺相比,增加深冷处理工序后试样中残余奥氏体含量明显降低,硬度增大,耐磨性提高;淬火+深冷+回火处理试样的残余奥氏体含量最低,硬度最高,耐磨性最好,其磨损量比淬火+回火处理试样的减少了6%;深冷处理提高了GCr15轴承钢的抗疲劳磨损和磨粒磨损的能力。
Abstract
GCr15 bearing steel was treated by quenching+tempering, quenching+tempering+deep cryogenic, quenching+deep cryogenic+tempering, quenching+tempering+deep cryogenic+tempering treatment, respectively, and the influence of deep cryogenic treatment on microstructure, hardness and wear resistance of GCr15 bearing steel was discussed. The results show that comparing with that treated by traditional quenching+tempering treatment, the content of retained austenite in the samples treated by the process with addition of deep cryogenic treatment decreased, the hardness increased and wear resistance was improved. The content of retained austenite in the sample treated by quenching+deep cryogenic+tempering was the lowest, the hardness was the highest, the wear resistance was the best, and the wear loss was reduced by 6% compared with that treated by quending and tempering treatment. The deep cryogenic treatment improved the fatigue wear resistance and abrasive wear resistance of GCr15 bearing steel.
中图分类号 TG142.1 DOI 10.11973/jxgccl201805011
所属栏目 材料性能及应用
基金项目
收稿日期 2017/2/28
修改稿日期 2018/4/6
网络出版日期
作者单位点击查看
备注陈叶青(1991-),女,安徽宣城人,硕士研究生
引用该论文: CHEN Yeqing,WU Yiwen,QIN Ziwei,ZHOU Xiao,WANG Hongbin. Effect of Deep Cryogenic Treatment on Microstructure and Mechanical Properties of GCr15 Bearing Steel[J]. Materials for mechancial engineering, 2018, 42(5): 55~58
陈叶青,吴益文,秦子威,周潇,汪宏斌. 深冷处理对GCr15轴承钢组织及力学性能的影响[J]. 机械工程材料, 2018, 42(5): 55~58
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