40CrNiMoA激光宽带相变硬化处理  

40CrNiMoA Phase-change Hardening Treatment by Laser-broadband Scanning

作　　者：刘倩[1,2] 宋力[2] 吴寒[2] 

机构地区：[1]中南大学交通运输工程学院,湖南长沙410075 [2]湖南科技大学机电工程学院,湖南湘潭411201

出　　处：《湖南科技大学学报（自然科学版）》2008年第4期35-39,共5页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：国防基础项目(A3720060115);湖南教育厅项目(06C322)

摘　　要：研究了40CrNiMoA钢在激光宽带相变硬化处理各工艺参数对合金显微硬度的影响．实验结果表明：40CrNiMoA激光宽带相变硬化处理搭接量的选择范围为14％-18％，激光宽带相变硬化处理后合金组织明显细化导致表面强化，淬层硬度可达到700HV以上，并且沿激光作用区横向硬度呈明显规律分布；探讨了40CrNiMoA激光宽带相变硬化相应机制．图13，表2，参13．The effect of different technological parameters on the surface hard ness was investigated for 40CrNiMoA steel by Laser-broadband scanning. The experimental results revealed that range of lap-amount was from 14% to 18%. The refined microstructure contributed to the surface stxength and the average value of hardness was above 700HV for the testing alloy. The distribution of hardness in the quenching-layer revealed regularity along the cross section. The strength mechanism for Laser-broadband scanning was discussed for 40CrNiMoA steel. 13figs., 2tabs., 13refs.

关 键 词：40CRNIMOA钢 激光宽带扫描 淬火层 硬度 显微组织 

分 类 号：O436[机械工程—光学工程]