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1.发明授权
公开(公告)号：US6120623A
公开(公告)日：2000-09-19
申请号：US24849
申请日：1998-02-17
申请人： Alok Kumar Gupta , David James Lloyd , Michael Jackson Bull , Pierre H. Marois , Daniel Ronald Evans
发明人： Alok Kumar Gupta , David James Lloyd , Michael Jackson Bull , Pierre H. Marois , Daniel Ronald Evans
摘要： A process of producing an aluminum alloy sheet product suitable for forming into automotive parts and exhibiting reduced roping effects. The process involves producing an aluminum alloy sheet product by direct chill casting an aluminum alloy to form a cast ingot, homogenizing the ingot, hot rolling the ingot to form and intermediate gauge product, cold rolling the intermediate gauge product to form a product of final gauge, and subjecting the final gauge product to a solutionizing treatment by heating the product to a solutionizing temperature, followed by a pre-aging step involving cooling the product to a coiling temperature above 50.degree. C., coiling the cooled product at the coiling temperature, and cooling the coiled final gauge product from the coiling temperature above 50.degree. C. to ambient temperature at a rate less than about 10.degree. C. per hour to improve T8X temper characteristics of the product. Additionally, a batch anneal step is carried out on the intermediate gauge product or at an intermediate stage of the cold rolling to reduce or eliminate roping tendencies of the alloy sheet product. To maintain a high T8X response, the alloy used in the process has the following composition: 0.4 to 1.1% by weight magnesium; 0.3 to 1.4% by weight silicon; 0 to 1.0% by weight copper; 0 to 0.4% by weight iron; 0 to 0.15% by weight manganese; 0 to 0.15% weight naturally-occurring impurities (collective total); and the balance aluminum. The invention also relates to a sheet alloy product exhibiting reduced roping effects produced by the indicated process.
摘要翻译： 一种制造适合于形成汽车部件并显示降低的绳索效果的铝合金板材产品的方法。 该方法包括通过直接冷铸铝合金来生产铝合金板产品，以形成铸锭，均质铸锭，热轧锭以形成和中间量规产品，冷轧中间规格产品以形成最终规格的产品 并通过将产物加热至溶解温度，然后进行预熟化步骤，使产物冷却到高于50℃的卷取温度，对最终规格产品进行固溶处理，卷取卷取温度下的冷却产物， 并将卷取的最终规格产品从高于50℃的卷取温度以小于约10℃/小时的速率冷却至环境温度，以改善产品的T8X回火特性。 此外，在中间规格产品上或在冷轧的中间阶段进行批量退火步骤，以减少或消除合金板产品的卷曲倾向。 为了保持高T8X响应，该方法中使用的合金具有以下组成：0.4至1.1重量％的镁; 0.3〜1.4重量％的硅; 0〜1.0重量％的铜; 0〜0.4％（重量）铁; 0〜0.15重量％的锰; 0〜0.15％重量的天然杂质（总量）; 和铝的平衡。 本发明还涉及一种表现出由所指示的方法产生的减少纱线效应的片状合金制品。
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公开(公告)号：US5306362A
公开(公告)日：1994-04-26
申请号：US950423
申请日：1992-09-23
申请人： Alok K. Gupta , David J. Lloyd , Pierre H. Marois
发明人： Alok K. Gupta , David J. Lloyd , Pierre H. Marois
摘要： The invention provides an aluminum alloy material consisting essentially of, by weight percent, 1% to 1.8% Cu, 0.8% to 1.4% Mg, 0.2% to 0.39% Si, 0.5% to 0.4% Fe, 0.05% to 0.40% Mn, with the balance aluminum with normal impurities. The alloy forms two precipitation phases during heat treatment and age hardening: a beta phase of Mg.sub.2 Si and an S' phase of Al.sub.2 CuMg. The alloy has improved formability without significant sacrifice of strength, and is particularly suited to be formed into automobile sheet metal parts such as hood lids, trunks lids, and fenders.
摘要翻译： 本发明提供一种铝合金材料，其基本上由以重量％计含量为1％至1.8％的Cu，0.8％至1.4％的Mg，0.2％至0.39％的Si，0.5％至0.4％的Fe，0.05％至0.40％的Mn， 余量为铝与正常杂质。 该合金在热处理和时效硬化期间形成两个析出相：Mg2Si的β相和Al2CuMg的S'相。 该合金具有改善的成形性，而没有显着的强度牺牲，并且特别适合于形成汽车钣金零件如罩盖，树干盖和挡泥板。
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公开(公告)号：US5616189A
公开(公告)日：1997-04-01
申请号：US279214
申请日：1994-07-22
申请人： Iljoon Jin , John Fitzsimon , Michael J. Bull , Pierre H. Marois , Alok K. Gupta , David J. Lloyd
发明人： Iljoon Jin , John Fitzsimon , Michael J. Bull , Pierre H. Marois , Alok K. Gupta , David J. Lloyd
IPC分类号： B22D11/00 , B22D11/06 , C22C21/02 , C22C21/06 , C22C21/08 , C22C21/14 , C22C21/16 , C22F1/00 , C22F1/043 , C22F1/05 , C22F1/057 , C22F1/04
摘要： An alloy of aluminum containing magnesium, silicon and optionally copper in amounts in percent by weight falling within one of the following ranges:(1) 0.4.ltoreq.Mg.ltoreq.0.8, 0.2.ltoreq.Si.ltoreq.0.5, 0.3.ltoreq.Cu.ltoreq.3.5;(2) 0.8.ltoreq.Mg.ltoreq.1.4, 0.2.ltoreq.Si.ltoreq.0.5, Cu.ltoreq.2.5; and(3) 0.4.ltoreq.Mg.ltoreq.1.0, 0.2.ltoreq.Si.ltoreq.1.4, Cu.ltoreq.2.0; said alloyhaving been formed into a sheet having properties suitable for automotive applications. The alloy may also contain at least one additional element selected from the group consisting of Fe in an amount of 0.4 percent by weight or less, Mn in an amount of 0.4 percent by weight or less, Zn in an amount of 0.3 percent by weight or less and a small amount of at least one other element, such as Cr, Ti, Zr and V. The alloy may be fabricated into sheet material suitable for automotive panels by, in a belt casting machine, producing alloy sheet by casting the alloy while extracting heat from the alloy at a rate that avoids both shell distortion of the sheet and excessive surface segregation, at least until said alloy freezes; solution heat treating the sheet to re-dissolve precipitated particles; and cooling the sheet at a rate that produces a T4 temper and a potential T8X temper suitable for automotive panels. By such means, panels suitable for automotive use can be produced efficiently and economically.
摘要翻译： 含有镁，硅和任选铜的铝的合金，其重量百分比在下列范围之内：（1）0.4
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公开(公告)号：US5728241A
公开(公告)日：1998-03-17
申请号：US764983
申请日：1996-12-13
IPC分类号： C22F1/00 , C22C21/02 , C22C21/06 , C22C21/08 , C22C21/14 , C22C21/16 , C22F1/04 , C22F1/043 , C22F1/05 , C22F1/057
摘要： A process of producing solution heat treated aluminum alloy sheet material comprises subjecting hot- or cold-rolled aluminum alloy sheet to solution heat treatment followed by quenching and, before substantial age hardening has taken place, subjecting the alloy sheet material to one or more subsequent heat treatments involving heating the material to a peak temperature in the range of 100.degree. to 300.degree. C. (preferably 130.degree.-270.degree. C.), holding the material at the peak temperature for a period of time less than about 1 minute, and cooling the alloy from the peak temperature to a temperature of 85.degree. C. or less. The sheet material treated in this way can by used for automotive panels and has good a good "paint bake response", i.e. an increase in yield strength from the T4 temper to the T8X temper upon painting and baking of the panels.
摘要翻译： 制备固溶热处理的铝合金板材的方法包括将热轧或冷轧铝合金板材进行固溶热处理，然后淬火，并且在大量时效硬化之前，对合金板材进行一个或多个随后的热处理 包括将材料加热到100℃至300℃（优选130℃-270℃）的峰值温度的处理，将材料保持在峰值温度下时间小于约1分钟，以及 将合金从峰值温度冷却至85℃以下的温度。 以这种方式处理的片材可以用于汽车面板，并且具有良好的“烤漆响应”，即在面漆的涂漆和烘烤时从T4回火到T8X回火的屈服强度的增加。
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公开(公告)号：US5041343A
公开(公告)日：1991-08-20
申请号：US301653
申请日：1989-01-25
CPC分类号： B32B15/016 , B23K35/286 , Y10T428/12458 , Y10T428/12764
摘要： A process is described for producing a corrosion resistant aluminum composite sheet product for use in brazing. The process steps comprise:(a) casting an aluminum-base core material containing no more than 0.4% iron, no more than 0.15% silicon, from about 0.1% to about 0.6% copper and from about 0.7% to about 1.5% manganese,(b) cladding the as-cast core material with an aluminum-base brazing alloy, with hot rolling to form a sheet product, and(c) directly cold rolling the sheet product to final gauge. When this product is subjected to a brazing heat cycle, a band of dense precipitate is formed in the core alloy immediately adjacent the cladding which protects the core against corrosion.
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公开(公告)号：US5037707A
公开(公告)日：1991-08-06
申请号：US302021
申请日：1989-01-25
CPC分类号： C23C26/00 , B23K35/286 , B32B15/016 , Y10T428/12764
摘要： A corrosion resistant aluminum article is described. It includes a main body portion formed of an aluminum alloy containing no more than 0.4% iron, no more than 0.15% silicon, from about 0.1% to about 0.6% copper and from about 0.7% to about 1.5% manganese. The corrosion resistance is provided by a silicon-rich band of dense precipitate formed in the alloy adjacent at least one face thereof. This band has a thickness of about 20-50 .mu.m and there is substantially less manganese in solid solution in the band than in the alloy outside the band. To form the band, a silicon-containing layer is applied to a surface of the alloy body to be protected and the composite thus formed is heat treated at a temperature of at least 550.degree. C.
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