Diffusivities and Atomic Mobilities in bcc Ti-Mo-Zr Alloys
Open Access
- 8 October 2018
- Vol. 11 (10), 1909
- https://doi.org/10.3390/ma11101909
Abstract
β-type (with bcc structure) titanium alloys have been widely used as artificial implants in the medical field due to their favorable properties. Among them, Ti-Mo alloy attracted numerous interests as metallic biomaterials. Understanding of kinetic characteristics of Ti alloys is critical to understand and manipulate the phase transformation and microstructure evolution during homogenization and precipitation. In this work, diffusion couple technique was employed to investigate the diffusion behaviors in bcc Ti-Mo-Zr alloys. The diffusion couples were prepared and annealed at 1373 K for 72 h and 1473 K for 48 h, respectively. The composition-distance profiles were obtained via electron probe micro-analysis (EPMA). The chemical diffusion coefficients and impurity diffusion coefficients were extracted via the Whittle-Green method and Hall method. The obtained diffusion coefficients were assessed to develop a self-consistent atomic mobility database of bcc phase in Ti-Mo-Zr system. The calculated diffusion coefficients were compared with the experimental results. They showed good agreement. Simulations were implemented by Dictra Module in Thermo-Calc software. The predicted composition-distance profiles, inter-diffusion flux, and diffusion paths are consistent with experimental data, confirming the accuracy of the database.This publication has 37 references indexed in Scilit:
- Mechanical and electrochemical characterisation of new Ti–Mo–Nb–Zr alloys for biomedical applicationsJournal of the Mechanical Behavior of Biomedical Materials, 2016
- Effect of zirconium content on the microstructure, physical properties and corrosion behavior of Ti alloysMaterials Science and Engineering: A, 2014
- Structure, Microstructure, and Selected Mechanical Properties of Ti-Zr-Mo Alloys for Biomedical ApplicationsAdvanced Materials Research, 2014
- Ti based biomaterials, the ultimate choice for orthopaedic implants – A reviewProgress in Materials Science, 2009
- High-temperature Titanium AlloysDefence Science Journal, 2005
- Biocompatibility of β-stabilizing elements of titanium alloysBiomaterials, 2004
- Development of a -type Ti–12Mo–5Ta alloy for biomedical applications: cytocompatibility and metallurgical aspectsJournal of Materials Science: Materials in Medicine, 2004
- Recent metallic materials for biomedical applicationsMetallurgical and Materials Transactions, 2002
- Structure and properties of cast binary Ti–Mo alloysBiomaterials, 1999
- Theoretical study of the effects of alloying elements on the strength and modulus of β-type bio-titanium alloysMaterials Science and Engineering: A, 1999