Abstract
Electron beam processing was considered to be the promising modification method for Al-Mg alloys. An investigation of the effect of high energy density on the surface modification layer was developed. The results demonstrated that the grain boundaries emerged and there are some microcracks formed along grain boundaries due to superfast heating and cooling speed during the treatment process. Due to this special microstructure morphology, the average friction coefficient was decreased but the wear volume was increased, and the yield strength and the ultimate tensile strength are reduced.
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