| 摘要 |
Quench-solidifed Al-Si alloy powder which contains more than 12 wt % Si is preformed, and the preforming is compression-molded into an aluminum alloy part. The aluminum alloy part is repeatedly subjected to a heating-and-cooling cycle of heating the aluminum alloy part to a temperature between 440 DEG C. and 500 DEG C. and cooling it to a temperature not higher than 380 DEG C.
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