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<p>Laser-directed energy deposition (L-DED) is a 3D metal printing technique that can be used for implant surface coating. Ti-10Mo-xCu alloy is considered to have a good application prospect in medical implant materials, but its related research in additive manufacturing has not been reported. This study aimed to explore the processing parameters for Ti-10Mo-xCu (x = 0, 1, 3, 5) alloy using L-DED, and investigate the influence of varying Cu content on the mechanical properties and microstructure. The results indicate that Ti-10Mo-xCu alloy fabricated by L-DED containing α and β phases. Moreover, with the increase in Cu content, the grain structure of Ti-10Mo-xCu alloy is equiaxed, α and β phases are mixed, and the α colonies in the grain are replaced by widmanstädter structure. The microhardness and tensile strength of Ti-10Mo-xCu alloy increase with increasing Cu content, but the elongation decreases, due to solid solution strengthening and the precipitation of Ti<sub>2</sub>Cu brittle phase. This work provides a reference for the application of Ti-10Mo-xCu alloy for additive manufactured implant coatings using L-DED process.</p>

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Microstructure and Mechanical Properties of Ti-10Mo-xCu Alloy Additively Manufactured by Laser-Directed Energy Deposition Process

  • 期刊论文

  • 发表日期：

    2025年1月31日

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  • Jiaxin Pan,
  • Fengtao Wang,
  • Zelin Xu,
  • Shibo Ma,
  • Yasi Li,
  • Dongna Gao

摘要

Laser-directed energy deposition (L-DED) is a 3D metal printing technique that can be used for implant surface coating. Ti-10Mo-xCu alloy is considered to have a good application prospect in medical implant materials, but its related research in additive manufacturing has not been reported. This study aimed to explore the processing parameters for Ti-10Mo-xCu (x = 0, 1, 3, 5) alloy using L-DED, and investigate the influence of varying Cu content on the mechanical properties and microstructure. The results indicate that Ti-10Mo-xCu alloy fabricated by L-DED containing α and β phases. Moreover, with the increase in Cu content, the grain structure of Ti-10Mo-xCu alloy is equiaxed, α and β phases are mixed, and the α colonies in the grain are replaced by widmanstädter structure. The microhardness and tensile strength of Ti-10Mo-xCu alloy increase with increasing Cu content, but the elongation decreases, due to solid solution strengthening and the precipitation of Ti2Cu brittle phase. This work provides a reference for the application of Ti-10Mo-xCu alloy for additive manufactured implant coatings using L-DED process.