High weldability nickel-base superalloy

Details High weldability nickel-base superalloy High weldability nickel-base superalloy

C - Chemistry, Metallurgy

22

C

75/113

C22C 19/05 (2006.01)

Patent

CA 1115995

ABSTRACT OF THE DISCLOSURE This is a nickel-base superalloy with excellent weldablility and high strength. Its composition consists essentially of, by weight percent, 10 -20 iron, 57-63 nickel, ~ 7-17 chromium, 4-6 molybdenum, 1-2 niobium, 0.2-0.8 silicon, 0.01-0.05 zirconium, 1.0-2.5 titanium, 1.0-2.5 aluminum, 0.02-0.06 carbon, and 0.002-0.15 boron. The weldability and strength of this alloy give it a variety of applications. The long-time structural stability of this alloy together with its low swelling under nuclear radiation conditions, make it especially suitable for use as a duct material and controlling element cladding for sodium-cooled nuclear reactors.

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