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    • 6. 发明公开
    • Method of producing aluminum alloys having superplastic properties
    • 埃斯特法伦
    • EP0761837A1
    • 1997-03-12
    • EP96306298.9
    • 1996-08-30
    • KAISER ALUMINUM & CHEMICAL CORPORATION
    • Brown, Kevin R., c/o Kaiser Aluminum & Chem. Corp.
    • C22F1/04C22F1/047C22F1/053C22K3/00
    • C22F1/04C22F1/047C22F1/053
    • A method of producing an aluminium alloy having superplastic properties, including the steps of: heating the aluminium alloy; hot rolling to an exit temperature ranging from about 650 to 70°F (343 to 21°C); and cold rolling to a gauge corresponding to a percentage of cold work falling within the zone defined by the lines joining the points of A (350°F, 177°C; 10%), B (600°F, 316°C; 99%), C (70°F, 21°C; 99%) and D (70°F, 21°C; 10%), shown in Fig. 2, showing the relationship between the temperature range of the hot rolling exit temperature and the percent of cold work. In another method, a heat-treatable aluminium alloy is held after an initial hot rolling at a temperature and time period sufficient to create precipitates of intermetallic constituents having a diameter ranging from about 0.5 to 10µm, hot rolled as above and then cold rolled as above but to a gauge corresponding to a percentage of cold work falling within the zone defined by points A (475°C, 246°C; 10%), B (650°F, 343°C; 99%), C (70°F, 21°C; 99%) and D (70°F, 21°C; 10%).
    • 一种具有超塑性的铝合金的制造方法,包括以下步骤:加热所述铝合金; 热轧至约650至70°F(343至21℃)的出口温度; 冷轧到相当于连接A点(350°F,177℃,10%),B(600°F,316℃; 99度) %),C(70°F,21℃; 99%)和D(70°F,21℃; 10%),如图1所示。 2,表示热轧出口温度的温度范围与冷作业的百分比之间的关系。 在另一种方法中,可热处理的铝合金在初始热轧之后保持在足以产生直径为约0.5至10μm的金属间组分沉淀物的温度和时间段,如上所述热轧,然后冷轧 (475℃,246℃,10%),B(650°F,343℃,99%),C( 70°F,21℃; 99%)和D(70°F,21℃; 10%)。