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<p>Thermal compression experiments were performed on Al-0.8&#xa0;Mg-1.4Si-0.5Cu alloy, and the hot deformation characteristics were systematically investigated at 450-510&#xa0;°C and 0.01-10&#xa0;s<sup>-1</sup>.The results indicate that reduction in peak flow stress as temperature rises at a constant strain rate, and an increase in peak flow stress as strain rate rises at a constant temperature. Constitutive equations and processing maps were developed based on the Arrhenius-type model, the dynamic materials model, and Prasad’s instability criterion. The identified optimum processing parameters are 460-485&#xa0;°C and 0.1-0.3&#xa0;s<sup>-1</sup>.</p>

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Deformation Behavior and Processing Maps of Al-0.8 Mg-1.4Si-0.5Cu Alloy under Thermal Compression

  • 期刊论文

  • 发表日期：

    2026年1月30日

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  • Hongxia Zhang,
  • Ao Zhang,
  • Nan Zhou,
  • Bofang Zhou,
  • Xintao Li

摘要

Thermal compression experiments were performed on Al-0.8 Mg-1.4Si-0.5Cu alloy, and the hot deformation characteristics were systematically investigated at 450-510 °C and 0.01-10 s-1.The results indicate that reduction in peak flow stress as temperature rises at a constant strain rate, and an increase in peak flow stress as strain rate rises at a constant temperature. Constitutive equations and processing maps were developed based on the Arrhenius-type model, the dynamic materials model, and Prasad’s instability criterion. The identified optimum processing parameters are 460-485 °C and 0.1-0.3 s-1.