Research of the Wear Resistance of 35CrMoA Steel in Laser quenching /Nitrided Layer
Laser quenching and nitriding treatment has been performed on 35CrMoA steel, and the microstructure, hardness and wear resistance of laser quenching/nitrided layer were investigated by means of OM, XRD and TEM, microhardness tester and wear equipment compared with the gas nitrided layers. The results show that both nitrided layer consisted of e, y, and Cr2N. The content of ?-Fe3N is higher in the laser quenching/nitrided white layer while the content of the brittle ?-Fe2N is lower than that of the gas nitrided layer. Especially the Cr2N particles are much finer. Spherical particles of cementite were formed in lower strip bainite. The scratch in worn surface of laser quenching/nitrided layer if shallow, but the gas nitriding worn surface has the deep plow furrow and flaking. After laser quenching/nitriding treatment, the depth of the nitrided layer increases, and hardness and wear resistance were improved dramatically.
Laser quenching Nitriding Microstructure micro-hardness wear resistance
Yiyuan Cheng Zhengfang Wang
Department of Mechanical Engineering Zibo Vocational College Zibo 255314, China
国际会议
哈尔滨
英文
3457-3460
2011-08-12（万方平台首次上网日期，不代表论文的发表时间）