| Summary: | 碩士 === 高苑科技大學 === 機械與自動化工程研究所 === 100 === The commercial use Al-Mg-Si series of straight wire rods contained with 6061
Aluminum alloy is made in this study as the material to be investigated in
self-clinching fastener’s products. The aluminum alloy’s material made in Japan and
Taiwan after aging treatment is carried on the cutting formation, the material test and
the surface measurement. Then comparison is made through the relationship
among microstructure, mechanical property and surface roughness in
heterogeneous alloys. The experimental results show that aluminum alloy’s
separation Mg2Si after aging treatment plays a critical function at the
strengthened effect of the Al-Mg-Si series of alloys. If the smaller the crystal
grain size is, the more the separation phase number, the smoother the shape and
the more uniform the spread will be. Then its material strength and hardness
become higher. This leads the processing surface roughness to reduce, and raises
the surface quality of the self-clinching fastener’s products.
Keywords: Aluminum alloy, Crystallinity, Surface roughness.
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