发明申请
- 专利标题: High-strength aluminum alloy extruded product with excellent impact absorption and stress corrosion cracking resistance and method of manufacturing the same
- 专利标题(中): 高强度铝合金挤压产品具有优良的冲击吸收和抗应力腐蚀开裂性能及其制造方法
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申请号: US11527777申请日: 2006-09-26
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公开(公告)号: US20070074791A1公开(公告)日: 2007-04-05
- 发明人: Arata Yoshida , Shinji Makino , Tomoo Yoshida
- 申请人: Arata Yoshida , Shinji Makino , Tomoo Yoshida
- 优先权: JP2006-209149 20060731; JP2005-278970 20050927
- 主分类号: C22C21/10
- IPC分类号: C22C21/10
摘要:
An aluminum alloy extruded product includes an aluminum alloy including 6.0 to 7.2 mass % of Zn, 1.0 to 1.6 mass % of Mg, 0.1 to 0.4 mass % of Cu, at least one component selected from the group consisting of Mn, Cr, and Zr in a respective amount of 0.25 mass % or less and a total amount of 0.15 to 0.25 mass %, 0.20 mass % or less of Fe, and 0.10 mass % or less of Si, with the balance substantially being aluminum, the aluminum alloy extruded product having a hollow cross-sectional shape, a recrystallization rate of 20% or less of a cross-sectional area of the extruded product, and a 0.2% proof stress of 370 to 450 MPa.
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