发明申请
US20080083478A1 High strength aluminum alloy casting and method of production of same
审中-公开
高强度铝合金铸造及其生产方法相同
- 专利标题: High strength aluminum alloy casting and method of production of same
- 专利标题(中): 高强度铝合金铸造及其生产方法相同
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申请号: US11986853申请日: 2007-11-27
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公开(公告)号: US20080083478A1公开(公告)日: 2008-04-10
- 发明人: Kouji Yamada , Tomoyuki Hatano , Susumu Miyakawa , Hiromi Takagi , Hiroshi Horikawa , Akio Hashimoto
- 申请人: Kouji Yamada , Tomoyuki Hatano , Susumu Miyakawa , Hiromi Takagi , Hiroshi Horikawa , Akio Hashimoto
- 优先权: JP2002-251956 20020829; JP2002-251984 20020829
- 主分类号: C22F1/043
- IPC分类号: C22F1/043 ; B22D18/02
摘要:
A high strength aluminum alloy casting obtained by casting an aluminum alloy comprised of 7.5 to 11.5 wt % of Si, 3.8 to 4.8 wt % of Cu, 0.45 to 0.65 wt % of Mg, 0.4 to 0.7 wt % of Fe, 0.35 to 0.45 wt % of Mn, and the balance of Al and not more than 0.2 wt % of unavoidable impurities, wherein this aluminum alloy has 0.1 to 0.3 wt % of Ag added to it or contains 0.1 to 1.0 wt % of at least one element selected from the group of second additive elements comprised of Rb, K, Ba, Sr, Zr, Nb, Ta, V, and Pd and rare earth elements, and a method of production of a high strength aluminum alloy casting comprising the steps of filling a melt of an aluminum alloy in a mold to obtain a casting, taking out the aluminum alloy casting from the mold, solubilizing the high strength aluminum alloy casting by heating in a temperature range of 495 to 505° C. for 2 to 6 hours, quenching the high strength aluminum alloy casting after the solubilization, and age hardening the high strength aluminum alloy casting by heating in a temperature range of 160 to 220° C. for 2 to 6 hours after quenching.