TENSILE PROPERTIES OF PYROLYTIC TUNGSTEN FROM 1370 TO 2980 C IN VACUUM

Journal Article · Sat Feb 01 04:00:00 EST 1964 · J. Less-Common Metals

DOI:https://doi.org/10.1016/0022-5088(64)90119-5· OSTI ID:4064078

Taylor, J L; Boone, D H

The tensile properties of annealed pyrolytic tungsten were measured at a strain rate of 0.02/min from 1370 to 2980 deg C in vacuum. Data for powder metallurgy and plasmaflame single-crystal tungsten are shown for comparison. A few engineering stress-strain curves are given for pyrolytic and powder metallurgy tungsten. Although voids are present in the pyrolytic material after annealing, the voids that form and grow during testing have a more important detrimental effect on ductility. The as deposited anisotropy of the microstructure is maintained after recrystallization and enhances the tendency to void formation and growth. With the exception of one specimen that contained no voids, as the result of a lower annealing temperature, pyrolytic tungsten has a lower ultimate strength than powder metallurgy tungsten in the temperature range studied. (auth)

• Research Organization: Jet Propulsion Lab., Pasadena, Calif.
• NSA Number: NSA-18-016504
• OSTI ID: 4064078
• Journal Information: J. Less-Common Metals, Journal Name: J. Less-Common Metals Vol. Vol: 6
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANISOTROPY
ANNEALING
CONFIGURATION
DEFORMATION
DIAGRAMS
DUCTILITY
EFFICIENCY
HIGH TEMPERATURE
MATERIALS TESTING
MEASURED VALUES
METALS, CERAMICS, AND OTHER MATERIALS
MONOCRYSTALS
PLASMA
POROSITY
POWDER METALLURGY
RECRYSTALLIZATION
STRESSES
TENSILE PROPERTIES
TUNGSTEN
VACUUM