Accession Number:

AD0600764

Title:

FURTHER DEVELOPMENT OF A DUCTILE TUNGSTEN-BASE SHEET ALLOY.

Descriptive Note:

Summary rept., 3 Feb 63-3 Apr 64,

Corporate Author:

BATTELLE MEMORIAL INST COLUMBUS OHIO

Report Date:

1964-04-30

Pagination or Media Count:

81.0

Abstract:

An experimental program was conducted with the primary objective of developing a room-temperature ductile tungsten-base alloy. The alloying approach employed was to study the combined effects of small additions of rhenium or iridium to tungsten for matrix softening and fine inert oxide dispersions of ThO2 or ZrO2. Also, the effect of alkali-silicate doping additions to the matrix were studied as to their ability to control grain size and recrystallization behavior. Optimum property combinations were found for W5Re-ThO2 type alloys prepared using a commercially doped tungsten powder. The culmination of this research was the development of a W-5Re4ThO2 alloy which showed an ultimate strength of 193 ksi, a yield strength of 182 ksi, and a 6 per cent elongation in tension at room temperature. This alloy also showed a 1-hour recrystallization temperature of 2000 C and an ultimate tensile strength of 36.6 ksi at 1650 C 3000 F. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE