Microstructural Characteristics of High Rate Plastic Deformation in Elektron (trademark) WE43 Magnesium Alloy

Abstract

High strain rate deformation of WE43 magnesium alloy was carried out by high velocity impacts, and the characteristics and mechanisms of microstructural damage were examined. Six samples were subjected to a variety of high velocity impact loadings that resulted in both partial and full damage. Optical, scanning and transmission electron microscopy analyses were performed in order to identify regions of shear localization. These regions were used to map, both quantitatively and qualitatively, the effects of deformation on the microstructure. Shear localization was observed in every sample, and its depth was measured. Evidence of shear localization was observed to a greater extent in samples with partial damage while fracturing was observed more frequently in samples with full damage.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2012
Accession Number
ADA562514

Entities

People

  • Bruce Davis
  • Joseph A. Hamilton
  • Kyu C. Cho
  • Rick Delorme
  • Sarah T. Brennan
  • Yongho Sohn

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Alloys
  • Bulk Materials
  • Crystal Structure
  • Deformation (Mechanics)
  • Electron Microscopy
  • Kinetic Energy
  • Magnesium
  • Magnesium Alloys
  • Materials
  • Materials Science
  • Metals
  • Microscopes
  • Microscopy
  • Microstructure
  • Plastic Deformation
  • Strain Rate
  • Transmission Electron Microscopy

Fields of Study

  • Materials science

Readers

  • Auditory Neuroscience/Auditory Physiology.
  • Fluid Dynamics.
  • Metallurgy

Technology Areas

  • Microelectronics