Publication details
Modelling of phase equilibria in the Hf-V system below room temperature
| Authors | |
|---|---|
| Year of publication | 2019 |
| Type | Conference abstract |
| MU Faculty or unit | |
| Citation | |
| Description | Phase transformation from orthorhombic HfV2 structure to cubic C15 Laves phase structure, occurring during heating at about 114 K, is well known. In this contribution, a thermodynamic description of this phenomenon is provided with the help of ab initio electronic structure calculations. We utilize the thermodynamic database extending the Scientific Group Thermodata Europe (SGTE) unary data to zero Kelvin and demonstrate that this procedure may be also applied to intermetallic phases. The data from a recent thermodynamic assessment of the Hf-V system (valid for temperatures above 298.15 K)) are employed and extended to zero Kelvin by the same method as it was used for unary data. Under the assumption of validity of harmonic approximation, thermodynamics of C15 and orthorhombic phase is described. |
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