RESEARCH AND DEVELOPMENT IN HIGH STRENGTH HEAT RESISTANT ALLOYS. Interim Report No. 16 for period December 27, 1960 through February 26, 1961

Technical Report · Mon Feb 27 04:00:00 EST 1961

OSTI ID:4836784

Feild, Jr, A L; Lewis, A I

Ten 6-lb tantalum alloy ingots were vacuum arc melted successfully using a-c power. These ingots and six others previously melted with d-c power were extruded at temperatures up to 1700 deg C in a high energy rate machine. Thirteen of these ingots were extruded with excellent results, one hung up in the die, and two broke up completely when passing through the die. Four extrusions were rolled to 0.100-in. thick strip in stainless steel cans at 1200 deg C. Tensile test specimens from the strip are now being tested at room, elevated, and sub- zero temperatures. Metallographic and hardness data on the Ta-- Zr and Ta-- Hf binary systems were correlated and preliminary conclusions drawn regarding characteristics of these systems. (auth)

• Research Organization: Westinghouse Electric Corp. Research Labs., Pittsburgh
• NSA Number: NSA-16-000514
• OSTI ID: 4836784
• Report Number(s): AD-255012
• Country of Publication: United States
• Language: English

Related Subjects

ALLOYS
CURRENTS
ELECTRIC ARCS
EXTRUSION
HAFNIUM ALLOYS
HARDNESS
HEAT RESISTING METALS
HIGH TEMPERATURE
MATERIALS TESTING
MECHANICAL PROPERTIES
MELTING
METALLOGRAPHY
METALS, CERAMICS, AND OTHER MATERIALS
PREPARATION
ROLLING
STAINLESS STEELS
TANTALUM ALLOYS
TEMPERATURE
TENSILE PROPERTIES
VACUUM
ZIRCONIUM ALLOYS