Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 528, Issue 2, Pages 622-630Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2010.09.013
Keywords
Thermodynamic; Mobility; Optimisation; Ti-Al-V
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A thermodynamic optimisation of the ordered B2 phase in the Ti-Al binary and Ti-Al-V ternary systems is carried out, making use of a two-sublattice model (Ti,Al,V):(Ti,Al,V). A self-consistent set of parameters is obtained; it is demonstrated that the available experimental data for the phase equilibria are reproduced accurately. Based upon the thermodynamic driving forces calculated by the new thermodynamic database, interdiffusion in the disordered A2 phase of the ternary Ti-Al-V system is assessed and optimised. A set of parameters describing the atomic mobilities of the disordered A2 phase are given, which will be useful for future quantitative models of phase transitions involving this phase. (C) 2010 Elsevier B.V. All rights reserved.
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