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中文摘要：
镁铝复合板是一种节能降耗的新型材料,研究其成形性能对于推广其工业应用具有重要意义。通过刚模胀形实验获得了5052/AZ31/5052镁铝复合板在170和230℃时的成形极限曲线,分析了胀形试样破裂处的断口形貌及胀形过程界面扩散行为。结果表明：镁铝复合板在230℃下具有较好的成形性能;胀形过程能促使界面附近镁铝元素分布均匀化,对扩散层的厚度影响不大,同时可以消除缺陷、增加机械咬合面积,有利于提高界面的结合强度。
英文摘要：
5052/AZ31/5052 tri-layer clad sheet is a new material with energy saving and consumption reduction. Its formability is of vital significance to promote its industrial applications. The forming limit curves of 5052Al/AZ31Mg/5052 Al tri-layer clad sheet at 170 ℃ and 230 ℃ were obtained by a hemispherical punch. Fracture morphology at limit position and the interface diffusion behavior during the bulging process were studied. The results show that the 5052Al/AZ31Mg/5052 Al tri-layer clad sheet has a superior formability at 230 ℃; the bulging process promotes the homogeneity of magnesium and aluminum elements distribution near the bond interface but has little effect on the thickness of the diffusion layer; meanwhile, the defects are eliminated and the mechanical occlusion areas of bond interface are increased by the bulging process, which is beneficial to enhance the bond strength of the interface.
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A novel testing approach for interfacial normal bond strength of thin laminated metallic composite p
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