| 摘要 |
PURPOSE:To obtain Al alloy machine parts having superior mechanical properties by subjecting rapidly cooled Al alloy powder to forging and solid phase sintering under prescribed conditions. CONSTITUTION:An Al alloy such as Al-17Si-4Cu-0.5Mg is rapidly solidified at >=10<3> deg.K/sec average cooling rate, and at the same time, it is pulverized to <=60 mesh grain size. This alloy powder is compression-molded to >=95% density by cold hydrostatic press molding. The resulting preform is heated to 200-600 deg.C and forged in dies. Thus, Al alloy machine parts having superior mechanical properties are obtd.
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