Affiliation:
1. AVIC Manufacturing Technology Institute
2. Chongqing University of Technology
Abstract
Aiming at the microstructure difference of electron beam surfi-sculpt and base metal of 6063 aluminum alloy and its effect on corrosion resistance at different temperatures, the samples of electron beam surfi-scuplt were prepared and heat-treated. Then metallographic analysis, SEM analysis and soaking test in 3.5% NaCl solution were carried out. It was found that the microstructure of electron beam surfi-sculpt was typical cast structure, which was obviously different from that of the base metal. In different heat treatment process, the diameter of spherical β” phase in surfi-sculpt was 0.5-1μm which made the surfi-sculpt have better corrosion resistance. The β” phase in base metal was short rod-shaped which size was 3-10 μm. And with the change of heat treatment process, obvious changes in microstructure and corrosion resistance were found in base metal.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
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