Elastic constants in Nb-Zr alloys from zero temperature to the melting point: Experiment and theory
- 15 October 1978
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 18 (8), 4120-4131
- https://doi.org/10.1103/physrevb.18.4120
Abstract
The elastic constants of bcc Nb-Zr alloys are measured over a composition range between 100 and 30 at.% of Nb and temperatures between zero and the melting point, using a new technique for the high-temperature measurements. Anomalous behavior is found for . The anomaly is a band-structure effect which is corroborated by theoretical calculations using electron-lattice coupling constants derived from a tight-binding parametrization scheme. The calculation is of a type similar to phonon dispersion ones, having the further complication of temperature effects which have convergence difficulties and need a special interpolation method.
Keywords
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