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Adv Eng Mater - 2025 - Sjafrizal - Powder Metallurgy Preparation of Metastable Ti Cr Ge Alloys for Medical Applications2.10 MB
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Journal article
Powder Metallurgy Preparation of Metastable β Ti–Cr–Ge Alloys for Medical Applications
Advanced Engineering Materials, Vol.27(16), pp.1-11
2025
Abstract
Despite being a promising candidate for alloying with titanium, with good biocompatibility and extended solubility in the Ti matrix, germanium (Ge) has received limited attention as an α ‐stabilizing addition for biomedical titanium alloys. This study investigates the mechanical performance and microstructure of novel Ti– x Cr–2Ge ( x = 10, 20 wt%) alloys to assess their suitability for implant applications. Both alloys retain near fully β‐phase structures after solution treatment with high yield strengths (>1100 MPa) and relatively low Young's moduli (<85 GPa). The increase in Cr concentrations from 10 to 20 wt% enhance β‐phase stability, effected their mechanical behaviors. The primary deformation mode transitions from twinning/transformation‐induced plasticity (TWIP/TRIP) dominated behavior in the lower stability Ti–10Cr–2Ge alloy to dislocation slip in the higher stability Ti–20Cr–2Ge alloy. This manifests distinct differences in the strain hardening rate behaviors. Ti–10Cr–2Ge alloy displays a characteristic peak in strain hardening rate indicative of TWIP/TRIP behaviors at ≈25% strain, while Ti–20Cr–2Ge alloy exhibits a monotonous increase throughout deformation. Ti–10Cr–2Ge alloy demonstrates higher yield strength and lower Young's modulus than Ti–20Cr–2Ge alloy, contributing to an outstanding elastic admissible strain of ≈1.8%. Overall, solution‐treated Ti–10Cr–2Ge alloy exhibits superior mechanical performance for load‐bearing biomedical applications.
Details
- Title
- Powder Metallurgy Preparation of Metastable β Ti–Cr–Ge Alloys for Medical Applications
- Authors
- Teddy Sjafrizal - The University of QueenslandDamon Kent - University of the Sunshine Coast, Queensland, School of Science, Technology and EngineeringAli Dehghan-Manshadi - The University of QueenslandMatthew S. Dargusch (Corresponding Author) - The University of Queensland
- Publication details
- Advanced Engineering Materials, Vol.27(16), pp.1-11
- Publisher
- Wiley-VCH Verlag GmbH & Co. KGaA
- Date published
- 2025
- DOI
- 10.1002/adem.202500563
- ISSN
- 1527-2648; 1438-1656
- Copyright note
- © 2025 The Author(s). Advanced Engineering Materials published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
- Data Availability
- The data that support the findings of this study are available from the corresponding author upon reasonable request.
- Grant note
- Lembaga Pengelola Dana Pendidikan. Grant Number: BUDI 2017
- Organisation Unit
- School of Science, Technology and Engineering
- Language
- English
- Record Identifier
- 991140304802621
- Output Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web Of Science research areas
- Materials Science, Multidisciplinary