发明授权
- 专利标题： Aluminum alloy sheet having good weldability, filiform corrosion resistance, formability, and bake-hardenability, and a method for manufacturing the same
- 专利标题（中）： 具有良好焊接性，丝状耐腐蚀性，成形性和烘烤硬化性的铝合金板及其制造方法
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申请号： US239653申请日： 1988-09-02
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公开(公告)号： US4909861A公开(公告)日： 1990-03-20
- 发明人: Yasuo Muraoka , Mituo Hino , Yasunori Sasaki , Seiji Sasabe
- 申请人： Yasuo Muraoka , Mituo Hino , Yasunori Sasaki , Seiji Sasabe
- 申请人地址： JPX Kobe JPX Tokyo
- 专利权人： Kabushiki Kaisha Kobe Seiko Sho,Honda Giken Kogyo Kabushiki Kaisha
- 当前专利权人： Kabushiki Kaisha Kobe Seiko Sho,Honda Giken Kogyo Kabushiki Kaisha
- 当前专利权人地址： JPX Kobe JPX Tokyo
- 优先权： JPX62-220894 19870903
- 主分类号： C22C21/00
- IPC分类号： C22C21/00 ; C22C21/02 ; C22C21/08 ; C22F1/00 ; C22F1/05
摘要：
An aluminum alloy sheet according to the present invention essentially consists of an aluminum alloy containing 0.5 to 1.4% magnesium, 0.6 to 1.5% silicon, and 0.005 to 0.1% titanium, all by weight, and aluminum and inevitable impurities for the remainder, and is adjusted so that the ratio of the silicon content to the magnesium content is 0.65 or more. The average crystal grain size and the electric conductivity of the aluminum alloy sheet are 70 .mu.m or less and 43 to 51% IACS, respectively.The composition of the aluminum alloy is adjusted in this manner, and the crystal grain size and the electric conductivity are restricted within the specific ranges by controlling the manufacturing conditions. Thus, there may be provided an aluminum alloy sheet which is improved in arc-weldability and resistance to filiform corrosion, as well as in formability and bake-hardenability at low temperature.
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