PILOT PRODUCTION AND EVALUATION OF TANTALUM ALLOY SHEET.
Abstract
The evaluation of T-222 (Ta-9.6W-2.4Hf-0.01C) sheet was continued with emphasis on the properties of a second heat of the alloy. The tensile and stress-rupture properties as well as the weld bend ductility of the second heat were superior to those of the first heat of T-222 produced. The evaluation of other TaW-Hf alloys showed that increasing the solute concentration of T-222 from 12 to 14% resulted in a substantial increase in 2400 F tensile strength while producing only a slight improvement at 3000 F. Increasing the carbon content of T-222 from 0.01 to 0.04% resulted in no significant change in mechanical properties. The substitution of nitrogen for carbon in T-222 produced no significant difference in properties. In a phase identification study, Ta2C and a complex FCC phase were identified, and their presence in T-222 was correlated with mechanical and thermal treatments. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 15, 1964
- Accession Number
- AD0437174
Entities
People
- R. L. Ammon
- R. T. Begly
Organizations
- Westinghouse Electric Corporation