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<p>TA1/2024/AZ31/2024/TA1 laminated composites (LMCs) were prepared using hot-pressing technology and then annealing at 300&#xa0;°C for different time was carried out to regulate interface structure. The influencing mechanisms of interface microstructure evolution on the mechanical behavior and stamping formability of LMCs were discussed. The researches reveal that the basal texture of the Mg layer in LMCs annealed for 1&#xa0;h is the weakest. The average Schmidt factor values of {1–100}&lt;11–20&gt;cylindrical and {11–22}&lt;11–2–3&gt;conical slip systems are relatively high, indicating they are easy to start, which is conducive to improving the plasticity of LMCs. As the annealing continues, both the Ti/Al and Al/Mg interface bonding strengths enhance first and then reduce, and the optimal bonding strengths of 47.80&#xa0;N/mm and 4.24&#xa0;N/mm are achieved when annealed for 1&#xa0;h, respectively. Both the ultimate tensile strength and yield strength of LMCs reduce first and then enhance, reaching the minimums of 237.75&#xa0;MPa and 189.02&#xa0;MPa when annealed for 1&#xa0;h, respectively. However, the changes of elongation (EL) and Erichsen value of LMCs are opposite, and they reach the maximum of 3.62% and 4.88&#xa0;mm after annealing for 1&#xa0;h, respectively. Crack deflection, tearing and the initiation of secondary microcracks consume energy and are more conducive to stamping. The research results will provide theoretical and experimental basis for the interface regulation behavior of LMCs suitable for stamping forming.</p> Graphical abstract <p></p>

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Achieving Excellent Stamping Formability by Regulating Interface in TA1/2024/AZ31/2024/TA1 Laminated Composites

  • 期刊论文

  • 发表日期：

    2026年4月29日

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  • Miao Cao,
  • Dazhou Wang,
  • Xiangqian Xin,
  • Chunbo Zhao,
  • Kunkun Deng

摘要

TA1/2024/AZ31/2024/TA1 laminated composites (LMCs) were prepared using hot-pressing technology and then annealing at 300 °C for different time was carried out to regulate interface structure. The influencing mechanisms of interface microstructure evolution on the mechanical behavior and stamping formability of LMCs were discussed. The researches reveal that the basal texture of the Mg layer in LMCs annealed for 1 h is the weakest. The average Schmidt factor values of {1–100}<11–20>cylindrical and {11–22}<11–2–3>conical slip systems are relatively high, indicating they are easy to start, which is conducive to improving the plasticity of LMCs. As the annealing continues, both the Ti/Al and Al/Mg interface bonding strengths enhance first and then reduce, and the optimal bonding strengths of 47.80 N/mm and 4.24 N/mm are achieved when annealed for 1 h, respectively. Both the ultimate tensile strength and yield strength of LMCs reduce first and then enhance, reaching the minimums of 237.75 MPa and 189.02 MPa when annealed for 1 h, respectively. However, the changes of elongation (EL) and Erichsen value of LMCs are opposite, and they reach the maximum of 3.62% and 4.88 mm after annealing for 1 h, respectively. Crack deflection, tearing and the initiation of secondary microcracks consume energy and are more conducive to stamping. The research results will provide theoretical and experimental basis for the interface regulation behavior of LMCs suitable for stamping forming.

Graphical abstract