Machinability of hypereutectic silicon-aluminum alloys |
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Authors: | T Tanaka T Akasawa |
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Affiliation: | (1) The University of Shiga Prefecture, 2500 Hassakacho, Hikone-shi, 522-0057 Shiga-ken, Japan;(2) Kanagawa University, 27-1 Rokkakubashi 3-chome, Kanagawa-ku, 221-8686 Yokohama-shi, Japan |
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Abstract: | The machinability of high-silicon aluminum alloys made by a P/M process and by casting was compared. The cutting test was
conducted by turning on lathes with the use of cemented carbide tools. The tool wear by machining the P/M alloy was far smaller
than the tool wear by machining the cast alloy. The roughness of the machined surface of the P/M alloy is far better than
that of the cast alloy, and the turning speed did not affect it greatly at higher speeds. The P/M alloy produced long chips,
so the disposal can cause trouble. The size effect of silicon grains on the machinability is discussed. |
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Keywords: | high-silicon aluminum alloy machinability powder metallurgy |
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