| Full text | |
| Author(s): |
Salvador, Camilo A. F.
;
Lopes, Eder S. N.
;
Bettini, Jefferson
;
Caram, Rubens
Total Authors: 4
|
| Document type: | Journal article |
| Source: | Materials Letters; v. 189, p. 201-205, FEB 15 2017. |
| Web of Science Citations: | 1 |
| Abstract | |
Herein, the fine-scaled a phase precipitation during step-quench heat treatments in Ti-15Nb-3.0Fe and Ti-11Nb-3.5Fe (wt%) alloys was evaluated. Thermodynamic analyses suggest that Ti-11Nb-3.5Fe alloy should present homogenous a phase formation via the pseudospinodal mechanism when solution treated and step-quenched at 450 degrees C, which is confirmed in this work. STEM-EDX measurements confirm the non-equilibrium state of the alpha phase precipitates, whose Nb content is significantly higher than that of the alpha phase laths obtained after solution heat treatment followed by furnace cooling. Fe seems to play an important role in the precipitation mechanism, and is depleted from alpha phase laths in a short aging time. (C) 2016 Elsevier B.V. All rights reserved. (AU) | |
| FAPESP's process: | 14/24449-0 - Phase transformations, microestructure and mechanical properties of new beta metastable Ti-Nb-Zr-Fe (TNZF) titanium alloys for biomedical applications |
| Grantee: | Camilo Augusto Fernandes Salvador |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| 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 |