Hafnium-Based Bulk Metallic Glasses for Kinetic Energy Penetrators

Abstract

A new family of quinary, hafnium-based, bulk-metallic glass-forming alloys has been developed for use in composite kinetic-energy penetrators. The alloys are based on an invariant point identified in the hafnium copper-nickel ternary system. They are denser than zirconium-based glass-forming compositions, and exhibit a higher reduced glass-transition temperature than alloys prepared by 1:1 hafnium substitution into the zirconium-based alloys. The combination of density and glass-forming ability exhibited by this alloy moves the composite technology closer to being a viable substitute for depleted-uranium penetrators.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2004
Accession Number
ADA433302

Entities

People

  • Brian T. Edwards
  • Laszlo J Kecskes
  • Robert H. Woodman

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Diffraction
  • Electron Microscopes
  • Electron Microscopy
  • Elements
  • Energy
  • Glass
  • Glass Transition Temperature
  • High Resolution
  • Kinetic Energy
  • Materials
  • Metallic Glass
  • Metals
  • Microscopes
  • Scattering
  • Transition Temperature
  • Transitions

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Thin Film Deposition Science.
  • ballistics.