The effects of argon pressurization on melt rate and arc distribution during vacuum arc remelting of Alloy 718

Technical Report · Tue Dec 31 23:00:00 EST 1991

OSTI ID:5847125

Williamson, R L; Zanner, F J ^[1]; Harrison, R ^[2]; Thompson, R ^[3]

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1. Sandia National Labs., Albuquerque, NM (United States)
2. Cameron Iron Works, Inc., Houston, TX (United States)
3. Teledyne Allvac, Monroe, NC (United States)

The effects of argon addition to the vacuum arc remelting (VAR) process were studied in both laboratory and industrial experiments while remelting Alloy 718. The results demonstrate that argon can be added to an industrial VAR furnace to relatively high partial pressures without decreasing the melt rate, drip-short frequency, or constricting the arc plasma to a local region of the electrode surface. Laboratory experiments illustrate that this result is dependent on electrode chemistry, possibly related to magnesium content.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5847125
• Report Number(s): SAND-92-0592C; ON: DE92009068
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
ALLOY-NI53CR19FE19NB5MO3
ALLOYS
ALUMINIUM ADDITIONS
ALUMINIUM ALLOYS
ARGON
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
ELEMENTS
FLUIDS
GASES
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCONEL 718
INCONEL ALLOYS
IRON ALLOYS
MATERIALS
MELTING
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM A
NONMETALS
PARTIAL PRESSURE
PHASE TRANSFORMATIONS
PRESSURE EFFECTS
RARE GASES
VACUUM MELTING