Influence of Electric Current on the Mechanical Deformation of Metals

Abstract

This report describes novel experiments developed to characterize electron-dislocation interactions in um/nm-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 5000A/mm2 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.

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Document Details

Document Type
Technical Report
Publication Date
Feb 27, 2019
Accession Number
AD1069850

Entities

People

  • Chandra Pande
  • Christopher C. Ruldolf
  • Christopher J. Kindle
  • James P. Thomas
  • Siddiq M Qidwai
  • Won M. Kang

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Acquisition
  • Creep
  • Crystal Structure
  • Crystals
  • Current Density
  • Data Acquisition
  • Electric Current
  • Electron Microscopes
  • Electron Microscopy
  • Grain Boundaries
  • Grain Growth
  • Grain Size
  • Heat Transfer
  • Load Cells
  • Manufacturing
  • Materials
  • Materials Science
  • Materials Testing
  • Measurement
  • Mechanics
  • Modulus Of Elasticity
  • Plastic Deformation
  • Stress Strain Relations
  • Temperature Control
  • Temperature Gradients
  • Test Methods
  • Thermal Conductivity

Fields of Study

  • Materials science
  • Physics

Readers

  • Powder metallurgy of Titanium alloys.
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Microelectronics