Effect of heat treatment on the microstructure, mechanical properties and tribological behavior of Ti–45Nb alloy fabricated by laser powder bed fusion

Pei Wang; Manman Zhou; Parthiban Ramasamy; Jia Tan; Liang Deng; Yang Lei; Nan Kang; Mohamed El Mansori; Jürgen Eckert

doi:10.1016/j.jmrt.2024.11.080

Journal of Materials Research and Technology (Nov 2024)

Effect of heat treatment on the microstructure, mechanical properties and tribological behavior of Ti–45Nb alloy fabricated by laser powder bed fusion

Pei Wang,
Manman Zhou,
Parthiban Ramasamy,
Jia Tan,
Liang Deng,
Yang Lei,
Nan Kang,
Mohamed El Mansori,
Jürgen Eckert

Affiliations

Pei Wang: Henan Key Laboratory of High Performance Carbon Fiber Reinforced Composites, Institute of Carbon Matrix Composites, Henan Academy of Sciences, Zhengzhou, 450046, China; Additive Manufacturing Institute, Shenzhen University, Nanhai Avenue 3688, 518060, Shenzhen, China
Manman Zhou: Henan Key Laboratory of High Performance Carbon Fiber Reinforced Composites, Institute of Carbon Matrix Composites, Henan Academy of Sciences, Zhengzhou, 450046, China; Additive Manufacturing Institute, Shenzhen University, Nanhai Avenue 3688, 518060, Shenzhen, China
Parthiban Ramasamy: Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Jahnstraße 12, A-8700, Leoben, Austria
Jia Tan: Department of Orthopedics, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
Liang Deng: Shanghai Engineering Research Center of Innovative Orthopaedic Instruments and Personalized Medicine, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China; Corresponding author.
Yang Lei: Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Jahnstraße 12, A-8700, Leoben, Austria; Department of Materials Science, Chair of Materials Physics, Montanuniversität Leoben, Jahnstraße 12, A-8700, Leoben, Austria; Corresponding author. Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Jahnstraße 12, A-8700, Leoben, Austria.
Nan Kang: Arts et Metiers Institute of Technology, MSMP, HESAM Université, F-51006, Châlons-en-Champagne, France; Corresponding author.
Mohamed El Mansori: Arts et Metiers Institute of Technology, MSMP, HESAM Université, F-51006, Châlons-en-Champagne, France
Jürgen Eckert: Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Jahnstraße 12, A-8700, Leoben, Austria; Department of Materials Science, Chair of Materials Physics, Montanuniversität Leoben, Jahnstraße 12, A-8700, Leoben, Austria

DOI: https://doi.org/10.1016/j.jmrt.2024.11.080
Journal volume & issue: Vol. 33
pp. 7070 – 7082

Abstract

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To avoid stress-shielding effects between biomedical implants and human bones, low modulus heat-treated Ti–45Nb specimens fabricated by laser powder bed fusion (LPBF) after annealing heat treatment were studied in this study. The microstructure and mechanical properties of the specimens revealed that (i) the as-built specimen consisted mainly of the β-TiNb phase, and heat treatment did not affect the phase species, demonstrating the thermal stability of the LPBFed Ti–45Nb alloy. (ii) After heat treatment, all the specimens exhibited excellent yield strengths (over 1100 MPa), and low Young's moduli (approximately 80 GPa). (iii) The specimens exhibited excellent wear resistance with the main wear modes of abrasive and adhesive wear and low COF (0.353–0.394) under a load of 20 N.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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