Preliminary Study of Laser Surface Modification Techniques for Magnesium Alloys
HUANG Zeya1 , GUAN Yingchun 1,2,3
(1. Hefei Innovation Research Institute of Beihang University, Hefei 230012, China; 2. School of Mechanical Engineering & Automation, Beihang University, Beijing 100083, China; 3. National Engineering Laboratory of Addictive Manufacturing for Large Metallic Components, Beihang University, Beijing 100083, China)
Abstract：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.