Structural and thermodynamic properties of heavily mechanically deformed Ru and AlRu
Abstract
We report on high-energy ball milling of Ru and AlRu. The deformation results in a drastic decrease of the crystal size to a nanometer scale and in an increase of atomic-level strain. This is accompanied by a disordering of the crystal lattice as is shown by means of the long-range-order parameter in AlRu. The specific heat increases by more than 15%-20%, indicating large changes in the vibrational and configurational part of the entropy. The stored energy of cold work is up to 6 kJ/mol for AlRu and 10 kJ/mol for Ru. This is almost 40% of the heat of fusion of Ru and exceeds by far the energies stored by other deformation processes.
- Publication:
-
Journal of Applied Physics
- Pub Date:
- January 1989
- DOI:
- 10.1063/1.342541
- Bibcode:
- 1989JAP....65..305H