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    • 5. 发明申请
    • Plastically worked cast aluminum alloy product, a manufacturing method thereof and a coupling method using plastic deformation thereof
    • 塑性加工铸造铝合金产品,其制造方法和使用其塑性变形的联接方法
    • US20010008155A1
    • 2001-07-19
    • US09757838
    • 2001-01-10
    • NIPPON LIGHT METAL CO., LTD
    • Akio HashimotoTakaaki IkariHiromi TakagiSumi Yoshikawa
    • C22C021/06C22F001/04
    • B22D17/00C22C21/04
    • The newly proposed cast aluminum alloy product has the composition consisting of 6.5-8.0% Si, 0.25-0.45% Mg, 0.08-0.40% Fe, 0.001-0.01% Ca, P less than 0.001%, 0.02-0.1% Ti, 0.001-0.01% B, optionally one or two of 0.05-0.3% Cr and 0.05-0.2% Mn, and the balance being Al except inevitable impurities. It has the metallurgical structure that an null-Al phase in a surface layer is of average grain size different by 50 nullm or less from an null-Al phase in an inner part, and that a maximum size of eutectic Si particles is 400 nullm or smaller. It is manufactured by injecting a molten aluminum alloy into metal dies at an injection speed of 0.05-0.25 m/second, and then cooling the injected alloy at a cooling speed of 20null C./or higher in a temperature range between liquidus and solidus curves in a state charged with a pressure of 30 MPa or higher. Since the cast product is good of ductility, it is used as a member for coupling another member therewith by calking or the like.
    • 新提出的铸铝合金产品的组成包括:6.5-8.0%Si,0.25-0.45%Mg,0.08-0.40%Fe,0.001-0.01%Ca,P小于0.001%,0.02-0.1%Ti,0.001- 0.01%B,任选一种或两种0.05-0.3%Cr和0.05-0.2%Mn,余量为Al,除了不可避免的杂质。 具有表面层中的α-Al相的平均粒径与内部的α-Al相的平均粒径不同于50μm以下的冶金结构,并且共晶Si粒子的最大尺寸为400μm, 较小。 通过以0.05-0.25m /秒的注入速度将熔融铝合金注入金属模具中,然后在液相线和固相线之间的温度范围内以20℃/或更高的冷却速度冷却注入的合金来制造 处于30MPa以上的状态下的曲线。 由于铸造产品具有良好的延展性,所以它被用作通过铆接等将另一部件与其连接的部件。