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Laser-based additive manufacturing (AM) has proven effective in fabricating titanium (Ti) alloys, overcoming various manufacturing challenges, and yielding enhanced mechanical properties. Looking to the limited available research on the AM processing of β type Ti-alloy, a novel metastable-β Ti-alloy showing high strength and ductility has been studied in this work via a laser processing route. A detailed study of the phase evolution and microstructural features has been carried out in correlation with the resulting mechanical properties. The novel Ti-alloy has also been processed through an arc melting route to investigate the effect of laser processing compared to conventional manufacturing. The laser-processed Ti64-20Fe-20Co alloy shows improved mechanical responses due to extensive grain refinement with higher β-phase stability than the arc melting route. The wear and corrosion responses have also been investigated for this laser-processed novel Ti-alloy, showing improvements over commercial Ti64. The results obtained from this study can benefit the AM processing of this novel Ti-alloy aiming applications in the defense and automobile industries.

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Development of Novel Ti64-Fe-Co-Based β-Titanium Alloy with Improved Strength and Elongation Properties Using Laser Processing Route

  • 会议论文

  • 发表日期：

    2025年

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  • Ipsita Mohanty,
  • Saurav Misra,
  • Sujoy Kumar Kar,
  • Partha Saha

摘要

Laser-based additive manufacturing (AM) has proven effective in fabricating titanium (Ti) alloys, overcoming various manufacturing challenges, and yielding enhanced mechanical properties. Looking to the limited available research on the AM processing of β type Ti-alloy, a novel metastable-β Ti-alloy showing high strength and ductility has been studied in this work via a laser processing route. A detailed study of the phase evolution and microstructural features has been carried out in correlation with the resulting mechanical properties. The novel Ti-alloy has also been processed through an arc melting route to investigate the effect of laser processing compared to conventional manufacturing. The laser-processed Ti64-20Fe-20Co alloy shows improved mechanical responses due to extensive grain refinement with higher β-phase stability than the arc melting route. The wear and corrosion responses have also been investigated for this laser-processed novel Ti-alloy, showing improvements over commercial Ti64. The results obtained from this study can benefit the AM processing of this novel Ti-alloy aiming applications in the defense and automobile industries.