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研究了粉末冶金法制备的SiCp增强铝基（Al—3．OCu—1．5Mg—0．4Mn）复合板材在热轧和冷轧状态下的力学性能及板材中的晶粒取向分布结果表明，热轧板材抗拉强度及塑性明显高于冷轧态，屈服强度则低于冷轧态.冷轧板织构主要包含微弱的剪切织构{001}<110>和两个常见的面心立方金属织构组分{110}<112>及{3314}<773>；而热轧板织构近乎无规分布.晶粒取向的择优对复合板材的屈服强度有一定影响，与抗拉强度无关.冷轧板抗拉强度的降低是轧制时产生的大量做裂纹所致．
The mechanical properties of SiCp reinforced aluminum-based (Al-3.OCu-1.5Mg-0.4Mn) composite sheet prepared by powder metallurgy method in hot rolling and cold rolling and the grain orientation distribution in the sheet were investigated. The tensile strength and ductility of hot-rolled sheet are obviously higher than that of cold-rolled sheet, while the yield strength is lower than that of cold-rolled sheet.The texture of cold-rolled sheet mainly includes weak shear texture {001} <110> and two common facets (110) <112> and {3314} <773>, respectively, while the texture of hot-rolled sheet is almost random distribution.The preferential orientation of the grain orientation has some influence on the yield strength of the composite sheet, and the tensile strength Has nothing to do.The reduction of tensile strength of cold-rolled sheet is caused by a large number of cracks occurred during rolling.