Determination of Operable Deformation Mechanisms during Ballistic Impact in Tungsten Single Crystals, Utilizing Transmission Electron Microscopy

Abstract

The performance of tungsten single crystals in ballistic impact varies strongly as a function of crystallographic orientation. The deformation structure of recovered single crystal rods fired in ballistic environments has been characterized by optical microscopy, SEM and TEM, and x-ray diffraction. The observed microstructures are varied and provide substantial insights into the factors governing the penetration and flow behavior under ballistic conditions. Crystallographic orientation influences the potential for developing shear which enhances material flow, and this enhancement ultimately maximizes the energy available for target penetration. Microstructural analysis elucidates the various mechanisms occurring during the flow process for single crystals of high-symmetry orientations, and suggests possible analogies between the penetration behavior of the tungsten single crystals and other materials.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1992
Accession Number
ADA255351

Entities

People

  • R. A. Herring

Organizations

  • Ballistic Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Crystals
  • Diffraction
  • Dislocations
  • Electron Diffraction
  • Electron Microscopy
  • Electrons
  • Engineering
  • Grain Boundaries
  • High Density
  • Mass Transfer
  • Materials
  • Mechanical Properties
  • Microscopy
  • Microstructure
  • Single Crystals
  • Transmission Electron Microscopy
  • Tungsten

Fields of Study

  • Materials science

Readers

  • Metallurgy
  • Nanoscale Plasmonic Nanotechnology
  • Quantum Chemistry

Technology Areas

  • Microelectronics