发明申请
- 专利标题: Aluminum Alloy Casting Material for Heat Treatment Excelling in Heat Conduction and Process for Producing the Same
- 专利标题(中): 用于热传导的铝合金铸造材料及其制造方法
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申请号: US11547257申请日: 2005-04-05
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公开(公告)号: US20110132504A1公开(公告)日: 2011-06-09
- 发明人: Hiroshi Horikawa , Sanji Kitaoka , Masahiko Shioda , Toshihiro Suzuki , Takahiko Watai , Hidetoshi Kawada
- 申请人: Hiroshi Horikawa , Sanji Kitaoka , Masahiko Shioda , Toshihiro Suzuki , Takahiko Watai , Hidetoshi Kawada
- 申请人地址: JP Tokyo
- 专利权人: NIPPON LIGHT METAL COMPANY, LTD.
- 当前专利权人: NIPPON LIGHT METAL COMPANY, LTD.
- 当前专利权人地址: JP Tokyo
- 优先权: JP2004-111496 20040405; JP2004-113584 20040407
- 国际申请: PCT/JP05/06639 WO 20050405
- 主分类号: C22F1/043
- IPC分类号: C22F1/043 ; C22C21/04 ; C22C21/08
摘要:
An aluminum alloy casting material for heat conduction obtained by adding Si to an aluminum alloy casting material with enhanced castability thereby realize enhancement of thermal conductivity. There is provided an aluminum alloy casting material excelling in heat conduction. characterized in that it comprises 5 to 10.0 mass % of Si, 0.1 to 0.5 mass % of Mg and the balance of Al and unavoidable impurities, the aluminum alloy casting material having undergone an aging treatment. Further, there is provided a cast aluminum alloy casting material that while having castability and mechanical strength equivalent to or higher than those of conventional cast aluminum alloys, is also enhanced in heat conduction; and provided a process for producing the cast aluminum alloy. In particular, there are provided a cast aluminum alloy and process for producing the same, wherein Si is contained in an amount of 6.0 to 8.0 mass %, the elements other than Si and Al each in simple form in an amount of ≦0.6%, and wherein the amount of Si solid-dissolved in aluminum parent phase is regulated to 0.5-1.1 mass % while the area ratio of crystallizate in metal structure is regulated to 5-8%. In this connection, the amount of Si solid-dissolved and the area ratio of crystallizate can be attained by performing of heating retaining treatment of the subject matter of cast aluminum alloy after casting operation at 400° to 510°C. for ≧1 hr.