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On the temperature and density dependence of dislocation drag from phonon wind

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/5.0054536· OSTI ID:1830594
At extreme strain rates, where fast moving dislocations govern plastic deformation, anharmonic phonon scattering imparts a drag force on the dislocations. In this paper, we present calculations of the dislocation drag coefficients of aluminum and copper as functions of temperature and density. We discuss the sensitivity of the drag coefficients to changes in the third-order elastic constants with temperature and density.
Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
89233218CNA000001
OSTI ID:
1830594
Alternate ID(s):
OSTI ID: 1805061
Report Number(s):
LA-UR--21-23521
Journal Information:
Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 1 Vol. 130; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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