ARC MELTING AND FABRICATION OF TUNGSTEN

Journal Article · Thu Mar 31 23:00:00 EST 1960 · Trans. Met. Soc. AIME

OSTI ID:4084458

Noesen, S J; Hughes, J R

Several 4-in.-diameter tungsten ingots were arc melted in vacuum or in hydrogen atmospheres. Melting pressures, melt-off rates, effect of atmospheres, and other pertinent factors were examined. Two of these ingots were extruded at l650 deg C. Subsequently, forging and rolling were carried out at lower temperatures. For a 60% area reduction by rolling, a l-hr recrystallization temperature of 1250 deg C was obtained. This temperature is considerably lower than that reported in previously published work, and can probably be attributed to the extreme purity of the as-cast ingots (N, H, and O, all less than 1 ppm). (auth)

• Research Organization: General Electric Research Lab., Schenectady, N.Y.
• NSA Number: NSA-15-005352
• OSTI ID: 4084458
• Journal Information: Trans. Met. Soc. AIME, Journal Name: Trans. Met. Soc. AIME Vol. Vol: 218
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ELECTRIC ARCS
ENVIRONMENT
EXTRUSION
FABRICATION
FORGING
HYDROGEN
IMPURITIES
MELTING
METALS, CERAMICS, AND OTHER MATERIALS
NITROGEN
OXYGEN
PRESSURE
RECRYSTALLIZATION
ROLLING
TEMPERATURE
TRACE AMOUNTS
TUNGSTEN
VACUUM
VELOCITY