Characterization of Tantalum Liners Applied to 25-mm and 120-mm Cannon Bore Sections via Explosive Bonding

Abstract

A materials forensics analysis was performed on sections of 25-mm rifled and 120-mm smoothbore gun tubes that were explosively bonded with pure tantalum. Characterization tests included liner thickness measurements, profilometry/surface finish, x-ray diffraction, and microstructural analysis including microhardness, scanning electron microscopy, energy dispersive spectroscopy, and adhesion testing. Results indicate that there was good adhesion. However, there was evidence that the explosive bonding process was overly energetic; both adiabatic shear bands in the steel and a brittle iron/tantalum intermetallic phase in the coating were observed.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2001
Accession Number
ADA387587

Entities

People

  • G. Kendall
  • G. Vigilante
  • P. Cote
  • Shang‐Fan Lee
  • T. Sage

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Counter IED
  • Weapons Technologies

DTIC Thesaurus Topics

  • Adhesion
  • Bonding
  • Diffraction
  • Electron Microscopy
  • Explosive Welding
  • Explosives
  • Finishes
  • Hardness
  • Materials
  • Microhardness
  • Microscopy
  • Scanning Electron Microscopy
  • Shear Bands
  • Tantalum
  • Tensile Strength
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Materials science

Readers

  • Surface Coatings Technology.
  • Thin Film Deposition Science.
  • ballistics.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene