| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a plastic working member capable of drastically abbreviating manufacturing processes. SOLUTION: In the method for manufacturing the plastic working member composed of an age-hardening type aluminum alloy, an alloy ingot composed of the age-hardening type aluminum alloy is cast and then heated to≥400°C and the melting point or under and is then plastically worked by a tool held at a temperature range of -100 to 100°C and thereafter the alloy is subjected to age-hardening treatment. According to the method for manufacturing the plastic working member, fine crystal grains of≤10μm in average grain size can be deposited to the metallic structure of the plastic working member and the plastic working member having excellent toughness can be manufactured. Also, plastic working and solution heat treatment can be simultaneously performed and therefore the manufacturing processes can be abbreviated as compared to the conventional method. The productivity of the plastic working member can be improved. COPYRIGHT: (C)2005,JPO&NCIPI
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