40CrNiMoA钢组织与耐磨性能研究  

Research on Microstructure andWear Resistance of 40CrNiMoA Steel

作　　者：罗杰 李祥 杨旭 韩佳龙 吴韦莉 Luo Jie;Li Xiang;Yang Xu;Han Jialong;Wu Weili(Guizhou Aerospace Precision Manufacturing Co.,Ltd.,Zunyi 563000,China;School of Materials Science and Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]贵州航天精工制造有限公司,贵州遵义563000 [2]南昌航空大学材料科学与工程学院,江西南昌330063

出　　处：《华东交通大学学报》2025年第1期105-112,共8页Journal of East China Jiaotong University

基　　金：贵州航天精工制造有限公司与南昌航空大学合作课题(GK202101048)。

摘　　要：为了解决40CrNiMoA钢硬度低和耐磨性能差的问题,设计了一种热处理工艺,采用水、盐溶液、油3种不同淬火介质,对40CrNiMoA钢进行高频淬火+低温回火热处理。采用HV-2000型维氏硬度计测试热处理后试样表面硬度,采用SFT-2M球-盘摩擦磨损试验机检测其耐磨性能。试验结果表明,当淬火介质为盐溶液时,回火马氏体更为细小,经热处理后的试样表面硬度最高,达到431.2 HV0.2,同时其磨损量最小。经盐溶液淬火后,可得到细小的回火马氏体,使得40CrNiMoA钢的硬度提高,试样磨损量减少,耐磨性能增强。In order to solve the problem of low hardness and poor wear resistance of 40CrNiMoA steel,a heat treatment process was designed,and three different quenching mediums were used,including water,salt solution and oil,to carry out high-frequency quenching and low-temperature tempering heat treatment of 40CrNiMoA steel.The HV-2000 Vickers hardness tester was used to test the surface hardness of the sample after heat treat-ment,and the SFT-2M ball-disc friction and wear testing machine was used to test its wear resistance.The re-sults show that when the quenching medium was salt solution,the tempered martensite was smaller,and the sur-face hardness of the specimen after heat treatment was the highest,reaching 431.2 HV0.2,and the wear was the smallest.After quenching in salt solution,fine tempered martensite can be obtained,resulting in increased hard-ness of 40CrNiMoA steel,less wear of the specimen and enhanced wear resistance.

关 键 词：高频淬火 淬火介质 表面硬度 摩擦磨损性能 

分 类 号：TG161[金属学及工艺—热处理] U25[金属学及工艺—金属学]