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Explosive compations of intermetallic-forming powder mixtures for fabricating structural energetic materials

  • S. W. Du
  • , B. Aydelotte
  • , D. Fondse
  • , C. T. Wei
  • , F. Jiang
  • , E. Herbold
  • , K. Vecchio
  • , M. A. Meyers
  • , N. N. Thadhani

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

11 Scopus citations

Abstract

A double-tube implosion geometry is used to explosively shock consolidate intermetallic-forming Ni-Al, Ta-Al, Nb-Al, Mo-Al and W-Al powder mixtures for fabricating bulk structural energetic materials, with mechanical strength and ability to undergo impact-initiated exothermic reactions. The compacts are characterized based on uniformity of micro structure and degree of densification. Mechanical properties of the compacts are characterized over the strain-rate range of 10-3 to 104 s-1. The impact reactivity is determined using rod-on-anvil experiments, in which disk-shaped compacts mounted on a copper projectile, are impacted against a steel anvil in using a 7.62 mm gas gun. The impact reactivity of the various explosively-consolidated reactive powder mixture compacts is correlated with overall kinetic energy and impact stress to determine their influence on threshold for reaction initiation. The characteristics of the various compacts, their mechanical properties and impact-initiated chemical reactivity will be described in this paper.

Original languageEnglish
Title of host publicationShock Compression of Condensed Matter - 2009 - Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter
Pages498-501
Number of pages4
DOIs
StatePublished - 2009
Externally publishedYes
EventConference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, 2009 APS SCCM - Nashville, TN, United States
Duration: Jun 28 2009Jul 3 2009

Publication series

NameAIP Conference Proceedings
Volume1195
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceConference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, 2009 APS SCCM
Country/TerritoryUnited States
CityNashville, TN
Period06/28/0907/3/09

Keywords

  • Energetic materials
  • Impact initiation
  • Intermetallic reaction
  • Shock-consolidation

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