LASER CLADDING OF MG-AL ALLOYS

被引：80
作者：
WANG, AA
SIRCAR, S
MAZUMDER, J
机构：
[1] Laser-Aided Materials Processing Laboratory, Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, Urbana, 61801, IL
来源：
JOURNAL OF MATERIALS SCIENCE | 1993年 / 28卷 / 19期
关键词：
D O I：
10.1007/BF00570050
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Among rapid solidification processing methods, laser cladding is a unique and promising technique which can be used to increase the corrosion resistance of materials. This paper describes the improvement of the laser-cladding process for magnesium-based alloys and an investigation of the effect of the laser-cladding technique upon the microstructure and the corrosion resistance of magnesium-based alloys. The cladding apparatus and techniques have been adapted for magnesium cladding to overcome the oxidation and high vapour pressure-related problems. Laser-clad Mg27Al73, Mg53Al47, and Mg72Al28 have been obtained. Eutectic phases were observed in the two magnesium-rich alloys and in the interface of the aluminium-rich alloy. Polycrystalline structure was formed in Mg27Al73. Laser-clad Mg27Al73 was found to be superior to laser-clad Mg-5 wt % Zr, Mg-2 wt % Zr, cast AZ91 B and cast magnesium in corrosion properties.
引用
收藏
页码：5113 / 5122
页数：10
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