公开(公告)号：US20050056353A1

公开(公告)日：2005-03-17

申请号：US10829391

申请日：2004-04-22

申请人： Charles Brooks ,  Ralph Dorward ,  Ray Parkinson ,  Rob Matuska ,  Mory Shaarbaf

发明人： Charles Brooks ,  Ralph Dorward ,  Ray Parkinson ,  Rob Matuska ,  Mory Shaarbaf

IPC分类号： C22C20060101 ,  C22C21/00 ,  C22C21/10 ,  C22F1/06 ,  C22F3/00

CPC分类号： C22F3/00 ,  C22F1/06

摘要： High strength aluminum alloys based on the Al—Zn—Mg—Cu alloy system preferably include high levels of zinc and copper to provide increased tensile strength without sacrificing toughness. In addition, small amounts of scandium are also preferably employed to prevent recrystalization. Preferred ranges of the elements include by weight, 8.5-11.0% Zn, 1.8-2.4% Mg, 1.8-2.6% Cu, 0.05-0.30% Sc and at least one element from the group Zr, V, or Hf not exceeding about 0.5%, the balance substantially aluminum and incidental impurities. During formation of the alloys, a homogenization process is preferably employed after alloy ingot casting in which a slow rate of temperature increase is employed as the alloy is heated as near as possible to its melting temperature. For the last 20-30 F below the melting temperature, the rate of increase is limited to 20 F/hr. or less to minimize the amount of low melting point eutectic phases and thereby further enhance fracture toughness of the alloy.

摘要翻译： 基于Al-Zn-Mg-Cu合金体系的高强度铝合金优选包括高水平的锌和铜，以提供增加的拉伸强度而不牺牲韧性。 此外，还优选使用少量的钪来防止再结晶。 元素的优选范围包括8.5-11.0％Zn，1.8-2.4％Mg，1.8-2.6％Cu，0.05-0.30％Sc和至少一种来自Zr，V或Hf族的元素不超过约0.5 ％，余量基本为铝和杂质。 在合金形成期间，优选在合金锭铸造之后采用均匀化方法，其中采用缓慢的升温速度，因为合金尽可能靠近其熔融温度被加热。 在熔融温度以下的最后20-30°F时，增加速率限制在20 F / hr。 以下使低熔点共晶相的量最小化，进一步提高合金的断裂韧性。

公开(公告)号：US20060213591A1

公开(公告)日：2006-09-28

申请号：US11087733

申请日：2005-03-24

申请人： Charles Brooks ,  Ralph Dorward ,  Ray Parkinson ,  Rob Matuska ,  Mory Shaarbaf

发明人： Charles Brooks ,  Ralph Dorward ,  Ray Parkinson ,  Rob Matuska ,  Mory Shaarbaf

IPC分类号： C22C21/10

CPC分类号： C22C21/10 ,  C22F1/053

摘要： High strength aluminum alloys based on the Al—Zn—Mg—Cu alloy system preferably include high levels of zinc and copper, but modest levels of magnesium, to provide increased tensile strength without sacrificing toughness. Preferred ranges of the elements include by weight, 8.5-10.5% Zn, 1.4-1.85 % Mg, 2.25-3.0% Cu and at least one element from the group Zr, V, or Hf not exceeding about 0.5%, the balance substantially aluminum and incidental impurities. In addition, small amounts of scandium (0.05-0.30%) are also preferably employed to prevent recrystalization. During formation of the alloys, homogenization, solution heat treating and artificial aging processes are preferably employed.

摘要翻译： 基于Al-Zn-Mg-Cu合金系统的高强度铝合金优选包括高水平的锌和铜，但适度的镁，以提供增加的拉伸强度而不牺牲韧性。 元素的优选范围包括8.5-10.5％的Zn，1.4-1.85％的Mg，2.25-3.0％的Cu和至少一种来自Zr，V或Hf的元素不超过约0.5％，余量基本上为铝 和杂质。 此外，还优选使用少量的钪（0.05-0.30％）以防止重结晶。 在合金形成期间，优选使用均化，固溶热处理和人造时效处理。