Electron drag on mobile dislocations in copper and aluminum at low temperatures: Strain rate, temperature, and field dependence

Journal Article · Mon Oct 01 00:00:00 EDT 1979 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.325762· OSTI ID:5950789

Galligan, J M; Pang, C S

Experimental results are presented which show how the electron drag on mobile dislocations varies with temperature, applied strain rate, and magnetic field. In both copper and aluminum the same functional dependence of the change in stress with magnetic field is observed, that is, the change in stress varies with the square of the field, and is independent of temperature and applied strain rate, for a given change in field. These results are compared with various models of electron dislocation drag, for the case where the dislocations move as underdamped oscillators. The observations are qualitatively consistent with the dislocations moving as underdamped oscillators, for the temperature range studied.

• Research Organization: Department of Metallurgy, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06268
• OSTI ID: 5950789
• Journal Information: J. Appl. Phys.; (United States), Vol. 50:10
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM
DISLOCATIONS
STRAIN RATE
COPPER
DAMPING
DATA
ELECTRON DRIFT
MAGNETIC FIELDS
OSCILLATORS
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRONIC EQUIPMENT
ELEMENTS
INFORMATION
LINE DEFECTS
METALS
PHYSICAL PROPERTIES
TRANSITION ELEMENTS
360103* - Metals & Alloys- Mechanical Properties