Agradecimentos: This work was supported by FAPESP (grants numbers 2014/24449-0 and 2014/06099-1). The authors acknowledge the Brazilian Nanotechnology National Laboratory (LNNano) at CNPEM, Brazil

Herein, the fine-scaled α 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 α phase formation via the pseudospinodal mechanism when solution-treated...

Herein, the fine-scaled α 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 α phase formation via the pseudospinodal mechanism when solution-treated and step-quenched at 450 °C, which is confirmed in this work. STEM-EDX measurements confirm the non-equilibrium state of the α phase precipitates, whose Nb content is significantly higher than that of the α 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 α phase laths in a short aging time

FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP

2014/24449-0; 2014/06099-1

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