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    • 2. 发明申请
    • 7000-SERIES ALUMINUM ALLOY EXTRUDED PRODUCT AND METHOD OF PRODUCING THE SAME
    • 7000系列铝合金挤压产品及其生产方法
    • US20110017366A1
    • 2011-01-27
    • US12896124
    • 2010-10-01
    • Tomoo YOSHIDAArata YoshidaShinji Makino
    • Tomoo YOSHIDAArata YoshidaShinji Makino
    • C22F1/053
    • B21C23/002C22C21/10C22F1/02C22F1/053
    • A method of producing an aluminum alloy extruded product comprising: casting a billet using a 7000-series aluminum alloy having Mg of 0.95 to 1.95 mass %, Zn of 5.10 to 7.90 mass %, an excess mg or Zn content relative to a stoichiometric composition shown by MgZn2 of less than 0.5 mass %; an A=Zn−5.36×Mg (mass %) of −2.64 to 0.50; and at least one of Mn, Cr and Zr with a total content thereof being less than 0.25 mass %; homogenizing the billet at 450 to 550° C.; preheating the homogenized product at 480 to 540° C.; extruding the preheated product with a die heated at 440 to 500° C.; and subjecting the extruded product to press quenching at an air cooling rate of 29° C./min or more, wherein a proof stress increase due to natural aging is 15 Mpa or less and a hardness HV increase due to natural aging is seven or less.
    • 一种铝合金挤压制品的制造方法,其特征在于,使用Mg为0.95〜1.95质量%,Zn为5.10〜7.90质量%,相对于所示化学计量组成的过量的mg或Zn含量的7000系铝合金铸造坯料 通过MgZn2小于0.5质量%; A = Zn-5.36×Mg(质量%)为-2.64〜0.50; 和Mn,Cr和Zr中的至少一种,其总含量小于0.25质量%; 在450〜550℃下均质化钢坯。 在480至540℃下预热均质产物。 用加热到440-500℃的模具挤压预热产品; 以29℃/分钟以上的空气冷却速度对挤压制品进行加压淬火,其中由于自然时效而产生的抗张力增加为15Mpa以下,由于自然时效而增加的硬度HV为7以下 。
    • 5. 发明申请
    • Impact absorbing material
    • 冲击吸收材料
    • US20050087266A1
    • 2005-04-28
    • US10882088
    • 2004-06-30
    • Shinji Makino
    • Shinji Makino
    • C22C21/10C22F1/053
    • C22C21/10C22F1/053
    • An impact absorbing material formed by: casting an aluminum alloy into a billet, the aluminum alloy including 5.6 to 6.6 wt % of zinc, 0.75 to 1.10 wt % of magnesium, 0.10 to 0.25 wt % of copper, 0.05 to 0.20 wt % of manganese, 0.03 to 0.15 wt % of chromium, 0.10 to 0.25 wt % of zirconium, 0.02 to 0.10 wt % of silicon, 0.05 to 0.17 wt % of iron, and the balance being aluminum and unavoidable impurities; extruding the billet to obtain an extruded shape having a hollow cross-section; and subjecting the extruded shape to artificial aging so that 0.2% proof stress is in a range of 340 to 385 MPa.
    • 通过以下方法形成的冲击吸收材料:将铝合金铸造成钢坯,所述铝合金包含锌,锌,锡,铜,铜,铜,铜,铜,铜,铜,铝, ,0.03〜0.15重量%的铬,0.10〜0.25重量%的锆,0.02〜0.10重量%的硅,0.05〜0.17重量%的铁,余量为铝和不可避免的杂质; 挤出坯料以获得具有中空横截面的挤出形状; 并将挤出形状进行人造时效,使得0.2%的屈服应力在340〜385MPa的范围内。