Influence of Electric Current on the Mechanical Deformation of Metals
Technical Report,01 Oct 2016,30 Sep 2018
NAVAL RESEARCH LAB WASHINGTON DC WASHINGTON United States
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This report describes novel experiments developed to characterize electron-dislocation interactions in umnm-scale specimens via in situ transmission electron microscopy TEM and tensile deformations of mm-scale specimens with applied electric currents and cooling that decoupled Joule heating from the current. The TEM results showed no apparent electron-dislocation interactions at current densities up to 5000 Amm2 with single-crystal Cu, and the coupled-tensile testing results showed large current effects on the plastic deformation of polycrystalline Ti but no effects with Cu and Fe.