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5052/AZ31/5052镁铝复合板成形极限及界面扩散行为
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太原理工大学,太原理工大学

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TG146.2 2

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国家自然科学基金项目(面上项目,重点项目,重大项目)


Forming Limit and Interface Diffusion Behavior of 5052/AZ31/5052 Tri-layer Clad Sheet
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Taiyuan University of Thechnology,Taiyuan University of Thechnology

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    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。本文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。

    Abstract:

    5052/AZ31/5052 tri-layer clad sheet is a new material with energy saving and consumption reduction. It is of vital significance to study its formibility for its wide applications in industrial field. The forming limit curves of 5052Al/AZ31Mg/5052Al tri-layer clad sheet at 170℃ and 230℃ were obtained respectively by using hemispherical punch. Fracture morphology at limit position and the interface diffusion behavior during bulging process were studied. The results showed that: 5052Al/AZ31Mg/5052Al tri-layer clad sheet has a superior formability at 230℃; the bulging process promoted magnesium and aluminum elements near the bond interface distributed homogeneously and had little effect on the thickness of diffusion layer; the defects were eliminated and the mechanical occlusion areas of bond interface were increased by the bulging process, which is beneficial to improve the bond strength of the interface.

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马艳彦,池成忠.5052/AZ31/5052镁铝复合板成形极限及界面扩散行为[J].稀有金属材料与工程,2016,45(8):2086~2091.[Ma Yanyan, Chi Chengzhong. Forming Limit and Interface Diffusion Behavior of 5052/AZ31/5052 Tri-layer Clad Sheet[J]. Rare Metal Materials and Engineering,2016,45(8):2086~2091.]
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历史
  • 收稿日期:2014-07-10
  • 最后修改日期:2014-07-30
  • 录用日期:2014-11-20
  • 在线发布日期: 2016-10-09
  • 出版日期: