发明授权
- 专利标题: Aluminum alloy extruded material for automotive structural members
- 专利标题(中): 用于汽车结构件的铝合金挤压材料
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申请号: US09738048申请日: 2000-12-15
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公开(公告)号: US06716390B2公开(公告)日: 2004-04-06
- 发明人: Yoichiro Bekki , Noboru Hayashi
- 申请人: Yoichiro Bekki , Noboru Hayashi
- 优先权: JP11-359950 20001217
- 主分类号: C21C2102
- IPC分类号: C21C2102
摘要:
An aluminum alloy extruded material for automotive structural members, which contains 2.6 to 5 wt % of Si, 0.15 to 0.3 wt % of Mg, 0.3 to 2 wt % of Cu, 0.05 to 1 wt % of Mn, 0.2 to 1.5 wt % of Fe, 0.2 to 2.5 wt % of Zn, 0.005 to 0.1 wt % of Cr, and 0.005 to 0.05 wt % of Ti, and satisfies relationship of the following expression (I), (Content of Mn (wt %))+0.32×(content of Fe (wt %))+0.097×(content of Si (wt %))+3.5×(content of Cr (wt %))+2.9×(content of Ti (wt %))≦1.36 (I) with the balance being made of aluminum and unavoidable impurities. A method of producing the aluminum alloy extruded material for automotive structural members, which comprises cooling with a refrigerant from outside of a die-exit side, at the time of extrusion.
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