对7075／6009铝合金层状复合板材进行了不同的固溶时效处理，优化得到了该复合板最佳的热处理工艺，并对热处理后复合板的力学性能和拉伸断口进行了分析。结果表明：该复合板最佳的热处理工艺为485℃×30min水淬＋175℃×8h炉冷，其抗拉强度为404MPa，屈服强度为364MPa，伸长率为15．3％；外层6009铝合金的拉伸断口上分布着大量韧窝，内外层合金间实现了良好的冶金结合。
Different solid solution and aging treatments were performed with 7075/6009 aluminum alloy laminated composite plate to obtain the optimal heat treatment process, and the mechanical properties and tensile fracture of the composite plate after heat treatment were analyzed. The results show that the optimal heat treatment process of the composite plate was solid solution at 485℃ for 30 min followed by water quenching and aging at 175 ℃for 8 h followed by cooling in furnace. The tensile strength, yield strength and elongation of the composite plate were 404 MPa, 364 MPa and 15.3%, respectively, A lot of dimples was found on the tensile fracture of outer layer 6009 aluminum alloy and the innerlayer and outerlayer alloys had a good metallurgical bonding.
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