Influence of HNS on the Microstructure and Properties of Cast TNT

Abstract

The influence of the additive 2,2',4,4',6,6'-hexanitrostilbene (HNS) on the physical properties of cast 2,4,6-trinitrotoluene (TNT) has been studied. As little as 0.3% HNS incorporated by the cycle-cast technique effects exceptional grain modification of the TNT, with an associated fourfold increase in strength. The same grain modification and increase in mechanical strength were achieved by the addition of pre-produced (TNT)2HNS complex to TNT at 90 deg C, and was unaffected by holding at that temperature for up to 4 h before casting. The simple inclusion of HNS caused a minor modification of the grain structure of TNT castings and a smaller increase in their mechanical strengths. These results are consistent with the inferior nucleation efficiency of HNS compared with the (TNT)2HNS complex.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1981
Accession Number
ADA117694

Entities

People

  • B. W. Thorpe
  • M. A. Parry

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Alkanes
  • Compressive Strength
  • Crystal Growth
  • Crystals
  • Efficiency
  • Engineering
  • Explosives
  • Grain Size
  • Materials
  • Materials Testing
  • Measurement
  • Mechanical Properties
  • Modulus Of Elasticity
  • Physical Properties
  • Security
  • Stress Strain Relations
  • Stresses

Fields of Study

  • Materials science

Readers

  • Agricultural Chemistry/Soil Science
  • Aquatic Ecology
  • Powder metallurgy of Titanium alloys.