基于局部加热的复合搅拌摩擦焊接方法,成功实现8 mm厚商业5754铝合金和T2纯铜的可靠焊接,并进行接头显微组织、物相组成、显微硬度分布和力学性能的测试与分析。结果表明:该复合搅拌摩擦焊接头组织致密,可靠性高;接头抗拉强度为242 MPa,达到5754铝合金母材的95%,达到T2纯铜母材的82%;接头焊核区由单质Al相、Cu相和Al2Cu相共同组成。 Based on the partial friction stir welding method with local heating, the reliable welding of commercial 5754 aluminum alloy and T2 pure copper with 8 mm thickness was successfully achieved. The microstructure, phase composition, microhardness distribution and mechanical properties of the joints were tested and analyzed. The results show that the composite friction stir welded joint has compact structure and high reliability. The joint tensile strength is 242 MPa, reaching 95% of 5754 aluminum alloy base material and reaching 82% of T2 pure copper base metal. Al phase, Cu phase and Al2Cu phase together.