扫描速度对MoCr铸铁表面激光淬火组织及性能影响

王超; 任宇航; 杨光; 钦兰云; 王维

doi:doi:10.14128/j.cnki.al.20163605.506

应用激光, 2016, 36 (5): 506, 网络出版: 2016-12-26

扫描速度对MoCr铸铁表面激光淬火组织及性能影响

Effect of Laser Scanning Speeds on Microstructure and Properties of Laser Quenching Layer of MoCr Cast Iron

论文大纲

王超 ^*任宇航杨光钦兰云王维

作者单位

沈阳航空航天大学航空制造工艺数字化国防重点学科实验室, 辽宁沈阳 110136

激光淬火 MoCr铸铁硬度耐磨性能 laser quenching MoCr cast iron hardness wear resistance

摘要

利用不同的激光扫描速度对MoCr铸铁表面进行激光淬火处理, 探讨了激光扫描速度对激光淬火层深度的影响, 并对激光相变硬化层的组织、硬度及磨损性能进行了研究。结果表明, 经激光淬火后, MoCr铸铁组织转变为细小的针状马氏体组织, 表面硬度提高了2.6倍以上, 耐磨性得到显著提高。激光扫描速度对淬火层有较大影响, 随着激光扫描速度的提高, 激光淬火层深度降低, 而硬度、耐磨性逐渐提高。

Abstract

The laser quenching test was made on the surface of MoCr cast iron with different laser scanning speeds. The effect of laser scanning speeds on the depth of laser quenching layer was investigated. The microstructure, hardness, and wear resistance of the laser phase transformation hardening layer were studied. The results indicate that the microstructure of MoCr cast iron transform into fine acicular martensite after laser quenching. The surface hardness of laser quenched samples is improved by more than 2.6 times, and the wear resistance is significantly enhanced. Laser scanning speed has an important effect on the laser quenching layer, with the increase of laser scanning speed, the depth of laser quenching layer decreases, but the hardness and wear resistance increase gradually.

参考文献

[1] 周健, 温宗胤, 李宝灵.CrMo铸铁汽车模具材料的激光表面处理［J］.矿冶工程, 2007, 27(1): 85-87.

[2] 侯琦, 刘广鑫, 杨光, 等.MoCr铸铁激光淬火组织及磨损性能研究［J］.应用激光, 2015, 35(6): 657-660.

[3] 温宗胤, 冯树强, 李宝灵.大型汽车覆盖件拉深模具的激光表面强化处理［J］.应用激光, 2006, 26(4): 230-232.

[4] 莫衡阳.强化汽车模具的激光新装备和工艺［J］.工艺与装备, 2010(11): 73-75.

[5] 赵晶琦.汽车模具激光淬火技术的应用和发展［J］.工业技术, 2014(4): 76-77.

[6] RAGHUVIR SINGH, S GHOSH CHOWDHURY, S K TIWARI, et al.Laser surface processing of Ti6Al4V in gaseous nitrogen: corrosion performance in physiological solution［J］.J Mater Sci: Mater Med, 2008(19): 1363-1369.

[7] 李刚, 相珺, 况军, 等.GCr15钢表面激光淬火的组织与性能［J］.材料热处理学报, 2010, 31(4): 129-132.

[8] 杨柳青, 丁阳喜, 付伟, 等.Cr2MoV钢宽带激光淬火试验研究［J］.金属热处理, 2006, 31(6): 49-51.

[9] LIU QINGBIN, LIU HONG.Experimental study of the laser quenching of 40CrNiMoA steel［J］.Journal of Materials Processing Technology, 1999(88): 77-82.

[10] CHEN ZHAOYUN, ZHOU GUIJUAN, CHEN ZHONGHUA.Microstructure and hardness investigation of 17-4PH stainlesssteel by laser quenching［J］.Material Science and Engineering, 2012(534): 536-541.

王超, 任宇航, 杨光, 钦兰云, 王维. 扫描速度对MoCr铸铁表面激光淬火组织及性能影响[J]. 应用激光, 2016, 36(5): 506. Wang Chao, Ren Yuhang, Yang Guang, Qin Lanyun, Wang Wei. Effect of Laser Scanning Speeds on Microstructure and Properties of Laser Quenching Layer of MoCr Cast Iron[J]. APPLIED LASER, 2016, 36(5): 506.

扫描速度对MoCr铸铁表面激光淬火组织及性能影响

关于本站 Cookie 的使用提示

全站搜索

扫描速度对MoCr铸铁表面激光淬火组织及性能影响

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索