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<p>Hot compression tests of an as-cast Ti<sub>2</sub>ZrTa<sub>0.75</sub> alloy were conducted using a Gleeble−3800 thermal simulator. Based on the results, a processing map was established to identify the optimal processing window. Subsequently, Ti<sub>2</sub>ZrTa<sub>0.75</sub> alloy plates were fabricated via pack rolling, achieving defect-free plates. The microstructural characteristics after both hot compression and pack rolling were investigated. The results indicate that deformation temperature and strain rate significantly influence the alloy's flow stress: Increasing temperature or decreasing strain rate reduces the flow stress. The calculated thermal activation energy is 129&#xa0;kJ/mol. The constructed processing map accurately predicts the alloy’s suitable processing regime, determined as 1000&#xa0;°C and 0.0369-1&#xa0;s<sup>−1</sup>.</p>

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Thermal deformation behavior and microstructure evolution of a novel Ti2ZrTa0.75 refractory alloy

  • 期刊论文

  • 发表日期：

    2026年1月3日

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  • Yunfeng Jiang,
  • Di Zhang,
  • Yue An,
  • Guohuai Liu,
  • Chi Zhang,
  • Yu Tang

摘要

Hot compression tests of an as-cast Ti2ZrTa0.75 alloy were conducted using a Gleeble−3800 thermal simulator. Based on the results, a processing map was established to identify the optimal processing window. Subsequently, Ti2ZrTa0.75 alloy plates were fabricated via pack rolling, achieving defect-free plates. The microstructural characteristics after both hot compression and pack rolling were investigated. The results indicate that deformation temperature and strain rate significantly influence the alloy's flow stress: Increasing temperature or decreasing strain rate reduces the flow stress. The calculated thermal activation energy is 129 kJ/mol. The constructed processing map accurately predicts the alloy’s suitable processing regime, determined as 1000 °C and 0.0369-1 s−1.