A thermodynamic analysis of the ti-h system

A partial phase diagram of the Ti-H system has been calculated by combining available thermodynamical and equilibrium solubility data of the system. This was accomplished by applying a two sublattice model to the interstitial solution phases having different lattice ratios. Excluding the position of...

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Veröffentlicht in:	Calphad 1987-04, Vol.11 (2), p.187-199
Hauptverfasser:	Kivilahti, J.K., Miettinen, J.M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Equations of state, phase equilibria, and phase transitions Exact sciences and technology Materials science Metals, semimetals and alloys Phase diagrams and microstructures developed by solidification and solid-solid phase transformations Phase diagrams of metals and alloys Physics Specific materials Specific phase transitions
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Beschreibung
Zusammenfassung:	A partial phase diagram of the Ti-H system has been calculated by combining available thermodynamical and equilibrium solubility data of the system. This was accomplished by applying a two sublattice model to the interstitial solution phases having different lattice ratios. Excluding the position of the eutectoid point and the αsolvus the agreement between the calculated and experimental results is satisfactory. In particular, the assessment of the phase diagram produced optimized parameter values for the titanium-hydrogen and hydrogen-hydrogen interactions as well as an estimate for the lattice stability of the fcc titanium, which together with the sublattice model used are expected to be useful also in the study of multicomponent titanium-hydrogen systems.
ISSN:	0364-5916 1873-2984
DOI:	10.1016/0364-5916(87)90014-9