MICROSTRUCTURAL AND FRACTOGRAPHIC STUDIES OF BORON CARBIDE SUBJECTED TO BALLISTIC IMPACT AND STATIC FLEXURAL LOADING

Abstract

Microstructural and fractographic studies were conducted on hot- pressed boron carbide ceramics subjected to ballistic impact by caliber .30 AP M2 projectiles and static flexural loading. A variety of observational techniques were employed, including conventional metallographic and low-power optical examinations, electron microprobe analysis, scanning electron microscopy, and replication electron microscopy. Results suggest that macroscopic topography of fracture-exposed surfaces is indicative of stress states occurring during the fracture event whereas microscopic topography is determined by microstructural constituents, particularly secondary phases, pores, and grain boundaries.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1970
Accession Number
AD0712307

Entities

People

  • William A. Brantley

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aluminum Oxides
  • Armor
  • Composite Armor
  • Composite Materials
  • Crystal Structure
  • Electron Microscopes
  • Electron Microscopy
  • Grain Boundaries
  • Materials
  • Materials Laboratories
  • Mechanical Properties
  • Mechanics
  • Microscopes
  • Microscopy
  • Modulus Of Elasticity
  • Scanning Electron Microscopes
  • Scanning Electron Microscopy

Fields of Study

  • Materials science

Readers

  • Structural Health Monitoring of Composite Structures.
  • Surface Engineering/Surface Coating Technology.
  • ballistics.

Technology Areas

  • Microelectronics