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<p>The effect of holding time of the Ti4Al3V alloy, fabricated by wire electron-beam additive manufacturing (WEBAM), at 900 °C on its microstructure and mechanical properties has been investigated. An α/β microstructure is formed after quenching and aging at 575 °C. Increasing the holding time from 6&#xa0;to 10 h leads to an increase in the microhardness (by 6.5%) and yield strength, reaching up to 585 MPa in the horizontal direction and 681 MPa in the vertical direction along with improved ductility. The thickness of the α‑laths remains unchanged, indicating that the temperature of 900 °C has limited influence on their coarsening.</p>

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Effect of holding time at 900 °C on the microstructure and mechanical properties of additively manufactured ti4Al3V alloy

  • 期刊论文

  • 发表日期：

    2025年11月1日

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  • A. O. Panfilov,
  • A. V. Nikolaeva,
  • A. P. Zykova,
  • A. V. Vorontsov

摘要

The effect of holding time of the Ti4Al3V alloy, fabricated by wire electron-beam additive manufacturing (WEBAM), at 900 °C on its microstructure and mechanical properties has been investigated. An α/β microstructure is formed after quenching and aging at 575 °C. Increasing the holding time from 6 to 10 h leads to an increase in the microhardness (by 6.5%) and yield strength, reaching up to 585 MPa in the horizontal direction and 681 MPa in the vertical direction along with improved ductility. The thickness of the α‑laths remains unchanged, indicating that the temperature of 900 °C has limited influence on their coarsening.