RESEARCH ON REFRACTORY ALLOYS OF TUNGSTEN, TANTALUM, MOLYBDENUM, AND COLUMBIUM. Quarterly Progress Report No. 3

Technical Report · Thu Feb 15 04:00:00 EST 1962

OSTI ID:4111633

Westgren, R C; Thompson, V R

The double electrode process was satisfactorily used to melt two ingots of a nominally W:12Cb:0.1Zr:0.1C alloy. However, when the W-Ti-Zr-C alloy was melted, the titanium recovery was too low. The Ta: 25W and Ta: 12Mo alloys were successfully rolled to intermediate gage sheet when plasma heating was used. Because of the inadequacy of the protective coatings used, no satisfactory sheet product was obtained in the rolling experiments on the tungsten-rich alloys. Several alloys exhibited tensile strengths in excess of 60,000 psi at 3000 deg F; the highest strength, 67,000 psi, was obtained with the W:20Ta: 12Mo alloy. On the basis of tensile properties at 3000 deg F, previously determined extrudability, and recent rolling experience, two of the following three alloys will be selected for further work: Ta: 20W: 12Mo, W: 12Cb, and W: 20Ta: 12Mo. (auth)

• Research Organization: Crucible Steel Co. of America, Pittsburgh
• NSA Number: NSA-18-012562
• OSTI ID: 4111633
• Report Number(s): X63-12299
• Country of Publication: United States
• Language: English

Related Subjects

ADDITIVES
CARBON
COATING
ELECTRODES
EXTRUSION
GAGES
HEATING
HIGH TEMPERATURE
MATERIALS TESTING
MELTING
METALS, CERAMICS, AND OTHER MATERIALS
MOLYBDENUM ALLOYS
NIOBIUM ALLOYS
PLASMA
PRODUCTION
RECOVERY
REFRACTORIES
RODS
ROLLING
SHEETS
TANTALUM ALLOYS
TENSILE PROPERTIES
TUNGSTEN ALLOYS
ZIRCONIUM