Design of a low Young's modulus Ti-Zr-Nb-Sn biocompatible alloy by <i>in situ</i> laser powder bed fusion additive manufacturing process - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Alloys and Compounds Année : 2023

Design of a low Young's modulus Ti-Zr-Nb-Sn biocompatible alloy by in situ laser powder bed fusion additive manufacturing process

Résumé

A new metastable beta Ti-22Zr-11 Nb-2Sn (at%) biomedical titanium alloy was elaborated from elemental powders by in situ laser powder bed fusion technique (L-PBF). Iterative design of experiments was used to identify optimized manufacturing parameters to obtain dense and homogeneous parts (>99.3%) with low unmolten niobium fraction (<0.05%). The microstructural and mechanical properties of this alloy were investigated in its as-fabricated state and after two heat-treatments at 400 °C and 700 °C, respectively. The alloy, showing a beta-type microstructure, possesses a very low Young's modulus (50 GPa) combined with a high tensile strength reaching about 1100 MPa after heat-treatment. These properties are very suitable for medical devices in osseous site such as hip prostheses or dental implants and the results were compared to the Ti-6Al-4 V ELI (wt%) medical grade fabricated from pre-alloyed powders. Thus, the present work demonstrates the significant potential of the in situ L-PBF technique to elaborate highly biocompatible titanium alloys with tailored chemical compositions.

Domaines

Chimie
Fichier principal
Vignette du fichier
2023 - JALCOM 966.pdf (2.64 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04219889 , version 1 (27-09-2023)

Identifiants

Citer

Hugo Schaal, Philippe Castany, Pascal Laheurte, Thierry Gloriant. Design of a low Young's modulus Ti-Zr-Nb-Sn biocompatible alloy by in situ laser powder bed fusion additive manufacturing process. Journal of Alloys and Compounds, 2023, 966, pp.171539. ⟨10.1016/j.jallcom.2023.171539⟩. ⟨hal-04219889⟩
1089 Consultations
5 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More