A THERMODYNAMIC ANALYSIS OF THE TI-H SYSTEM

被引:13
作者
KIVILAHTI, JK
MIETTINEN, JM
机构
[1] Helsinki Univ of Technology, Espoo, Finl, Helsinki Univ of Technology, Espoo, Finl
来源
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY | 1987年 / 11卷 / 02期
关键词
HYDROGEN - THERMODYNAMIC PROPERTIES - Calculations - THERMODYNAMICS - Analysis;
D O I
10.1016/0364-5916(87)90014-9
中图分类号
O414.1 [热力学];
学科分类号
摘要
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 alpha - solvus 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.
引用
收藏
页码:187 / 199
页数:13
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