浅谈几种典型镁合金激光表面改性技术  

Preliminary Study of Laser Surface Modification Techniques for Magnesium Alloys

作　　者：黄泽亚 管迎春 HUANG Zeya;GUAN Yingchun(Hefei Innovation Research Institute of Beihang University,Hefei 230012,China;School of Mechanical Engineering&Automation,Beihang University,Beijing 100083,China;National Engineering Laboratory of Addictive Manufacturing for Large Metallic Components,Beihang University,Beijing 100083,China)

机构地区：[1]北航合肥创新研究院跨尺度激光制造研究中心,合肥230012 [2]北京航空航天大学机械工程及自动化学院,北京100083 [3]北京航空航天大学大型金属构件增材制造国家工程实验室,北京100083

出　　处：《航空制造技术》2020年第13期32-39,46,共9页Aeronautical Manufacturing Technology

基　　金：国家自然科学基金(51705013);科技部重点研发计划重点专项(2016YFB1102503)。

摘　　要：镁合金具有密度小,比强度高和生物相容性好等优点,然而,表面性能不佳限制了其进一步应用。通过表面改性技术提高镁合金的耐腐蚀性和耐磨性可扩展镁合金的应用范围。激光技术在镁合金的表面改性中效果显著,得到广泛应用。主要介绍激光熔凝、纹理化和熔覆等几种典型镁合金表面改性技术,从激光–合金相互作用、微观组织结构的演变规律出发,分析表面性能增强机理。Magnesium alloys have the advantages of low density,high specific strength and good biocompatibility,but its poor surface properties limit their further use.Improving corrosion resistance and wear resistance of magnesium alloys through surface modification techniques can expand the application of magnesium alloys.Laser techniques have a significant effect on the surface modification of magnesium alloys and thus being widely used.This paper mainly introduces the three typical laser surface modification techniques including laser surface melting,surface texture and surface cladding.It will analyze the mechanism of surface performance enhancement from the laser-alloy interaction and the evolution of microstructure.

关 键 词：镁合金 激光表面熔凝 激光表面纹理化 激光熔覆 显微组织 表面形貌 耐腐蚀性 

分 类 号：TG665[金属学及工艺—金属切削加工及机床]