Biomedical Mo particles reinforced titanium alloy fabricated by laser additive manufacturing

Document Type

Journal Article

Publication Title

Journal of Alloys and Compounds

Volume

960

Publisher

Elsevier

School

School of Engineering

RAS ID

60245

Funders

National Natural Science Foundation of China

Comments

Zhou, M. M., Wang, P., Xu, L., Deng, L., Qi, J. F., & Zhang, L. C. (2023). Biomedical Mo particles reinforced titanium alloy fabricated by laser additive manufacturing. Journal of Alloys and Compounds, 170512. https://doi.org/10.1016/j.jallcom.2023.170512

Abstract

Modulus is an important factor in developing biomedical Ti-implants, and the high modulus of commercial TC4 alloy manufactured by laser powder bed fusion technology (LPBF) limits its applications in biomedical sector. This work proposed a low-cost and low-modulus 5 vol% Mo particles reinforced TC4 composites by LPBF with powder mixture. The results showed a phase transformation, which is the α′ phase to β phase via X-ray phase analysis due to the addition of Mo particles in the TC4 matrix, obtaining decreased modulus from 100±14 GPa to 64 ± 3 GPa and a significantly increased elongation from 14 ± 2% to 29 ± 1%. The fracture surface shows that the Mo particles’ plastic deformation can effectively improve the plasticity of Mo(p)/TC4 composites. This work may pave the way for developing low-modulus Ti-based composites for biomedical implants.

DOI

10.1016/j.jallcom.2023.170512

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