THE TENSILE STRENGTH OF SOME REFRACTORY METALS AT HIGH TEMPERATURES

Journal Article · Mon Feb 01 04:00:00 EST 1960 · J. Inst. Metals

OSTI ID:4144692

Mordike, B L

The tensile strengths of the refractory metals niobium, tantalum, tungsten, and molybdenum were measured in the range 0 to 2300 deg C. Up to 800 C a standard Hounsfield tensometer was used, but from 800 to 2200 deg C the measurements were made in a carbon-tube vacuum furnace. The behavior of these metals was comparable in every respect, at equivalent homologous temperatures, with that of the lower-melting-point metals. The upper temperature limit was imposed by a reaction between carbon vapor from the furnace tube and the specimen. Above 2000 deg C a carbide was formed on the surface and diffused into the specimen, thereby affecting the mechanical properties appreciably. (auth)

• Research Organization: Univ. of Cambridge, Eng.
• NSA Number: NSA-14-012974
• OSTI ID: 4144692
• Journal Information: J. Inst. Metals, Journal Name: J. Inst. Metals Vol. Vol: 88
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CARBIDES
CARBON
CHEMICAL REACTIONS
DIFFUSION
FURNACES
HIGH TEMPERATURE
LABORATORY EQUIPMENT
MEASURED VALUES
MECHANICAL PROPERTIES
MELTING POINTS
METALS, CERAMICS, AND MATERIALS
MOLYBDENUM
NIOBIUM
REFRACTORIES
SURFACES
TANTALUM
TEMPERATURE
TENSILE PROPERTIES
TUBES
TUNGSTEN
VACUUM
VAPORS