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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The effect of Sn addition on phase stability and phase evolution during aging heat treatment in Ti-Mo alloys employed as biomaterials

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Author(s):
de Mello, Mariana G. [1] ; Salvador, Camilo F. [1] ; Cremasco, Alessandra [1] ; Caram, Rubens [1]
Total Authors: 4
Affiliation:
[1] Univ Estadual Campinas, Sch Mech Engn, BR-13083860 Campinas, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: MATERIALS CHARACTERIZATION; v. 110, p. 5-13, DEC 2015.
Web of Science Citations: 10
Abstract

Increases in life expectancy and improvements in necessary healthcare attach great importance to the development of biomaterials. Ti alloys containing beta stabilizing elements are often used as biomaterials due to their high specific strength, high corrosion resistance, unusual biocompatibility and low elastic moduli, which benefit bone tissues close to an implant. This study deals with phase stability in beta Ti-Mo-Sn alloys processed under different conditions and was performed according to the following steps: a study of the effect of Sn content (a) on phase stability in Ti-Mo alloys, (b) on the suppression of alpha{''} and omega phase precipitation; (c) on alpha-phase precipitation during aging heat treatments and (d) on mechanical properties, including the elastic modulus, as measured using tensile tests and acoustic techniques. The alloys were prepared by arc melting under a controlled atmosphere followed by homogenization heat treatment and hot rolling. Optical microscopy, scanning and transmission electron microscopy, X-ray diffraction and differential scanning calorimetry were employed for characterization purposes. Samples were also submitted to solution treatment above the beta transus temperature and aging heat treatments under a controlled atmosphere. The results suggest that Sn suppresses the formation of the to and alpha{''} phases in Ti-Mo system. (C) 2015 Elsevier Inc. All rights reserved. (AU)

FAPESP's process: 14/06099-1 - Alpha phase nucleation in metastable beta type titanium alloys in the Ti-Nb-Fe system
Grantee:Rubens Caram Junior
Support Opportunities: Regular Research Grants