Aluminum alloy plate excelling in filiform corrosion resistance and method of fabricating same
    4.
    发明授权
    Aluminum alloy plate excelling in filiform corrosion resistance and method of fabricating same 有权
    铝合金板优良的丝状耐腐蚀性及其制造方法

    公开(公告)号:US06464805B2

    公开(公告)日:2002-10-15

    申请号:US09817765

    申请日:2001-03-26

    IPC分类号: C22C2108

    摘要: An Al—Mg—Si—Cu aluminum alloy plate excelling in strength and formability and exhibiting improved filiform corrosion resistance which is suitably used for automotive body panels. The aluminum alloy plate contains 0.25-0.6% of Mg (mass %, hereinafter the same), 0.9-1.1% of Si, 0.6-1.0% of Cu, and at least one of 0.20% or less of Mn and 0.10% or less of Cr, with the balance consisting of Al and impurities, wherein the number of Q phases (Cu—Mg—Si—Al phases) with a size of 2 &mgr;m or more in diameter present in a matrix is 150 per mm2 or more. The aluminum alloy plate is fabricated by homogenizing an ingot of an aluminum alloy having the above composition at 530° C. or more, cooling the ingot to 450° C. or less at a cooling rate of 30° C./hour or less, hot-rolling the ingot, cold-rolling the hot-rolled product, and providing the cold-rolled product with a solution heat treatment.

    摘要翻译: Al-Mg-Si-Cu铝合金板具有优异的强度和成形性,并且表现出改善的丝状耐腐蚀性,适用于汽车车身面板。 铝合金板含有0.25-0.6%的Mg(质量%,以下相同),0.9-1.1%的Si,0.6-1.0%的Cu和0.20%以下的Mn和0.10%以下的至少一种 的Cr,余量由Al和杂质构成,其中存在于基体中的直径为2μm以上的Q相(Cu-Mg-Si-Al相)的数量为150个/ mm 2以上。 铝合金板通过在530℃以上均匀化具有上述成分的铝合金锭制成,以30℃/小时以下的冷却速度将锭冷却至450℃以下, 对锭进行热轧,冷轧热轧制品,并对冷轧制品进行固溶热处理。

    Aluminum alloy sheet with excellent formability and paint bake hardenability and method for production thereof
    5.
    发明申请
    Aluminum alloy sheet with excellent formability and paint bake hardenability and method for production thereof 审中-公开
    具有优异成形性的铝合金板和油漆烘烤淬透性及其制造方法

    公开(公告)号:US20080178967A1

    公开(公告)日:2008-07-31

    申请号:US12077853

    申请日:2008-03-21

    IPC分类号: C22C21/08

    摘要: A sheet of a 6000 type aluminum alloy containing Si and Mg as main alloy components and having an excellent formability sufficient to allow flat hemming, excellent resistance to denting, and good hardenability during baking a coating, which exhibits an anisotropy of Lankford values of more than 0.4 or the strength ratio for cube orientations of the texture thereof of 20 or more, and exhibits a minimum bend radius of 0.5 mm or less at 180° bending, even when the offset yield strength thereof exceeds 140 MPa through natural aging; and a method for producing the sheet of the aluminum alloy, which includes the steps of subjecting an ingot to a homogenization treatment, cooling to a temperature lower than 350° C. at a cooling rate of 100° C./hr or more, optionally to room temperature, heating again to a temperature of 300 to 500° C. and subjecting it to hot rolling, cold rolling the hot rolled product, and subjecting the cold rolled sheet to a solution treatment at a temperature of 400° C. or higher, followed by quenching.

    摘要翻译: 一种含有Si和Mg作为主要合金组分的6000型铝合金片材,其具有足以允许平坦折边,优异的耐凹陷性和在烘烤涂层中的良好淬透性的优异的成型性,其显示出兰肯福特值的各向异性 0.4或其立体取向的强度比为20以上,并且即使通过自然时效,其偏移屈服强度超过140MPa时,弯曲弯曲180°时的最小弯曲半径为0.5mm以下。 以及铝合金板的制造方法,其特征在于,包括以下步骤:对锭进行均质化处理,以100℃/小时以上的冷却速度冷却至350℃以下的温度 至室温,再次加热至300〜500℃的温度,对其进行热轧,冷轧,将该冷轧板在400℃以上的温度下进行固溶处理 ,然后淬火。

    Aluminum alloy material exhibiting excellent bendability and method for producing the same

    公开(公告)号:US09834833B2

    公开(公告)日:2017-12-05

    申请号:US14118789

    申请日:2011-10-06

    IPC分类号: C22F1/057 C22C21/16 C22C21/14

    CPC分类号: C22F1/057 C22C21/14 C22C21/16

    摘要: An aluminum alloy material exhibiting excellent bendability can be produced without performing a straightening step, and can be bent without developing orange peel. The aluminum alloy material is a T4-tempered material formed of an Al—Cu—Mg—Si alloy including 1.0 to 2.5 mass % of Cu, 0.5 to 1.5 mass % of Mg, and 0.5 to 1.5 mass % of Si, with the balance being aluminum and unavoidable impurities, a matrix that forms an inner part of the aluminum alloy material having a microstructure formed by recrystallized grains having an average crystal grain size of 200 μm or less, and the aluminum alloy material having a ratio of tensile strength/yield strength determined by a tensile test of 1.5 or more.

    HIGH-STRENGTH ALUMINUM ALLOY PRODUCT AND METHOD OF PRODUCING THE SAME
    7.
    发明申请
    HIGH-STRENGTH ALUMINUM ALLOY PRODUCT AND METHOD OF PRODUCING THE SAME 审中-公开
    高强度铝合金产品及其生产方法

    公开(公告)号:US20120312427A1

    公开(公告)日:2012-12-13

    申请号:US13471938

    申请日:2012-05-15

    摘要: A high-strength Al—Cu—Mg—Si aluminum alloy product obtained by extrusion is characterized in that the microstructure of the entire surface of the cross-section of the aluminum alloy product is formed of recrystallized grains, the grains have an average aspect ratio (L/t) of 5.0 or less and the orientation density of the grains in the microstructure, for which the normal direction to the {001} plane is parallel to the extrusion direction in comparison with the grains orientated to random orientations, is 50 or less. The high-strength Al—Cu—Mg—Si aluminum alloy product is characterized in that rod-shaped precipitates are arranged in the grains of the matrix in the direction, the precipitates have an average length of 10 to 70 nm and a maximum length of 120 nm or less, and the number density of the precipitates in the [001] direction measured from the (001) plane is 500 or more per square micrometer.

    摘要翻译: 通过挤出获得的高强度Al-Cu-Mg-Si铝合金产品的特征在于,铝合金产品的横截面的整个表面的微观结构由再结晶晶粒形成,晶粒具有平均纵横比 (L / t)为5.0以下,与取向为随机取向的晶粒相比,{001}面与{001}面的法线方向平行的微观结构的晶粒取向密度为50或 减。 高强度Al-Cu-Mg-Si铝合金产品的特征在于,在<100>方向上的基体颗粒中设置棒状析出物,析出物的平均长度为10〜70nm, 最大长度为120nm以下,从(001)面测定的[001]方向的析出物的数密度为每平方微米500以上。

    Method of joining aluminum alloy members and joined product used for press forming
    8.
    发明申请
    Method of joining aluminum alloy members and joined product used for press forming 有权
    连接铝合金构件和用于冲压成型的接合制品的方法

    公开(公告)号:US20070138235A1

    公开(公告)日:2007-06-21

    申请号:US11305446

    申请日:2005-12-15

    IPC分类号: B23K20/12 B23K37/00

    摘要: A method of joining aluminum alloy members, including the steps of: obtaining a joined body including: (a) contacting aluminum alloy members each made of a 6000 series aluminum alloy with T4 temper; and (b) performing a friction stir welding operation on a contact portion of the aluminum alloy members at which they are held in contact with each other, so as to form a stir zone at the contact portion; and performing, on the obtained joined body, an underaging treatment which is an artificial aging treatment and which is completed before hardness of the stir zone reaches maximum hardness, the underaging treatment being performed before GP zones are formed at the stir zone of the joined body.

    摘要翻译: 一种接合铝合金构件的方法,包括以下步骤:获得一种接合体,该接合体包括:(a)使具有T4回火的由6000系列铝合金制成的铝合金构件接触; 和(b)在铝合金构件的接触部分彼此接触地进行摩擦搅拌焊接操作,以在接触部分形成搅拌区; 并且对所获得的接合体进行作为人工时效处理的未成熟处理,并且在搅拌区域的硬度达到最大硬度之前完成,在接合体的搅拌区域形成GP区之前进行未成熟处理 。

    HIGH-STRENGTH ALUMINUM ALLOY PRODUCT AND METHOD OF PRODUCING THE SAME
    9.
    发明申请
    HIGH-STRENGTH ALUMINUM ALLOY PRODUCT AND METHOD OF PRODUCING THE SAME 审中-公开
    高强度铝合金产品及其生产方法

    公开(公告)号:US20100059151A1

    公开(公告)日:2010-03-11

    申请号:US12312704

    申请日:2007-12-12

    摘要: A heat-treated high-strength Al—Cu—Mg—Si aluminum alloy product exhibits excellent extrudability and high strength. The high-strength Al—Cu—Mg—Si aluminum alloy product obtained by extrusion is characterized in that the microstructure of the entire surface of the cross section of the aluminum alloy product is formed of recrystallized grains, the grains have an average aspect ratio (L/t) of 5.0 or less (wherein L is the average size of the grains in the extrusion direction, and t is the average thickness of the grains), and the orientation density of the grains in the microstructure, for which the normal direction to the {001} plane is parallel to the extrusion direction in comparison with the grains orientated to random orientations, is 50 or less. The high-strength Al—Cu—Mg—Si aluminum alloy product obtained by extrusion and cold working is characterized in that rod-shaped precipitates are arranged in the grains of the matrix in the direction, the precipitates have an average length of 10 to 70 nm and a maximum length of 120 nm or less, and the number density of the precipitates in the [001] direction measured from the (001) plane is 500 or more per square micrometer.

    摘要翻译: 经热处理的高强度Al-Cu-Mg-Si铝合金产品具有优异的挤出性和高强度。 通过挤出获得的高强度Al-Cu-Mg-Si铝合金产品的特征在于,铝合金产品的横截面的整个表面的微观结构由再结晶晶粒形成,颗粒具有平均纵横比( L / t)为5.0以下(其中L是挤出方向上的晶粒的平均尺寸,t是晶粒的平均厚度),并且微观结构中的晶粒的取向密度为法线方向 与定向为随机取向的晶粒相比,{001}平面与挤出方向平行,为50以下。 通过挤出和冷加工获得的高强度Al-Cu-Mg-Si铝合金产品的特征在于,在<100>方向上在基体颗粒中排列棒状沉淀物,沉淀物的平均长度 10〜70nm,最大长度为120nm以下,从(001)面测定的[001]方向的析出物的数密度为每平方微米500以上。