激光淬火层的转动微动磨损行为  

Rotational fretting wear behavior of laser quenching layer

作　　者：罗军[1,2] 莫继良[2] 蔡振兵[2] 彭金方[2] 朱旻昊[2] 

机构地区：[1]西南交通大学牵引动力国家重点实验室摩擦学研究所,四川成都610031 [2]贵阳学院化学与材料工程学院,材料磨损与腐蚀防护贵州省高校特色工程中心

出　　处：《材料热处理学报》2013年第5期153-157,共5页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金(51025519;51005191;51005192);教育部创新团队科学基金项目(IRT1178);贵州省科学技术基金(黔科合J字[2012]2019号);贵阳市创新人才计划-青年科技人才培养(筑科合同[209-15]号);材料磨损与腐蚀防护贵州省高校特色工程中心(黔科合KY字[2012]023号)

摘　　要：利用激光淬火技术在LZ50钢表面形成淬火层。对激光淬火层及其基体材料(LZ50钢)在干态不同角位移幅值下进行了转动微动磨损试验,并采用扫描电子显微镜、电子能谱仪和形貌仪对磨斑进行微观分析。结果表明:与基材相比,激光淬火层在滑移区的运行范围向右移动,部分滑移区的运行范围缩小。激光淬火层降低了基体的摩擦系数,并提高了基体的耐磨性。在部分滑移区,激光淬火层损伤轻微;滑移区,激光淬火层的损伤主要表现为磨粒磨损。The quenched layer on the surface of I,ZSO steel was prepared by laser quenched technique. The rotational fretting wear tests of the laser quenched layer and its substrate （ LZSO steel） were carried out under different angular displacement amplitudes in dry condition. The wear scars were analyzed by scanning electron microscopy （SEM） , energy dispersive spectrometer （EDX） and profilometer. The results indicate that compared with the substrate steel, the slip regimes of the laser quenched layer move right,and the range of the partial slip regime is diminished. The friction coefficient of substrate steel laser-quenched is reduced, and its wear resistance is improved. The damage of the laser quenched layer in the partial slip regime is very slight. And in the slip regime, the damage mechanism of the laser quenched layer is mainly abrasive wear.

关 键 词：微动磨损 转动微动 激光淬火层 LZ50钢 

分 类 号：TG174.44[金属学及工艺—金属表面处理]