Accession Number:

ADA076435

Title:

The Effective Nucleant during the Grain Modification of TNT with HNS,

Descriptive Note:

Corporate Author:

MATERIALS RESEARCH LABS ASCOT VALE (AUSTRALIA)

Personal Author(s):

• Parry ,Murray A.
• Thorpe,Barry W.

Report Date:

1979-05-01

Pagination or Media Count:

22.0

Abstract:

Small concentrations of 2,2,4,4,6,6-hexanitrostilbene HNS have been shown previously to modify the grain structure of 2,4,6-trinitrotoluene TNT. At the very low concentrations used, the character and properties of the effective nucleant proved difficult to study and so an enrichment process has been developed. It is found that the nucleant is not the HNS which was added originally, but a complex of composition TNT2. HNS which is formed during thermal cycling of the individual components. The pre-production and simple addition of complex just prior to casting has been shown to be a feasible alternative to the cycle-cast technique currently being employed. Author

Descriptors:

• *NUCLEATION
• *ADDITIVES
• *TNT
• *GRAIN STRUCTURES(METALLURGY)
• COMPLEX COMPOUNDS
• CASTING
• THERMAL CYCLING TESTS
• ENRICHMENT
• UNITED KINGDOM

Subject Categories:

• Ammunition and Explosives

Distribution Statement:

APPROVED FOR PUBLIC RELEASE