FURTHER DEVELOPMENT OF A DUCTILE TUNGSTEN-BASE SHEET ALLOY.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 30, 1964
- Accession Number
- AD0600764
Entities
People
- D. J. Maykuth
- H. R. Ogden
- J. L. Ratliff
- Robert Isaac Jaffee
Organizations
- Battelle Memorial Institute