Precipitation hardenable iron-nickel-chromium alloy having good swelling resistance and low neutron absorbence

Patent · Tue Dec 02 04:00:00 EST 1980

OSTI ID:6470354

Gibson, R C; Korenko, M K; Merrick, H F

An iron-nickel-chromium age-hardenable alloy suitable for use in fast breeder reactor ducts and cladding which utilizes the ..gamma..'' strengthening phase and characterized in having a morphology of the ..gamma..'' phase enveloping the ..gamma..' phase and delta phase distributed at or near the grain boundaries. The alloy consists essentially of about 40-50% nickel, 7.5-14% chromium, 1.5-4% niobium, 0.25-0.75% silicon, 1-3% titanium, 0.1-0.5% aluminum, 0.02-0.1% carbon, 0.002-0.015% boron, and the balance iron. Up to 2% manganese and up to 0.01% magnesium may be added to inhibit trace element effects; up to 1% zirconium may be added to increase radiation swelling resistance; and up to 3% molybdenum may be added to increase strength.

• Assignee: Department of Energy
• Patent Number(s): US 4236943
• OSTI ID: 6470354
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210500 -- Power Reactors
Breeding
36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
ALLOYS
ALUMINIUM ADDITIONS
ALUMINIUM ALLOYS
BORON ADDITIONS
BORON ALLOYS
BREEDER REACTORS
CARBON ADDITIONS
CHEMICAL COMPOSITION
CHROMIUM ALLOYS
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
NICKEL ALLOYS
NICKEL STEELS
NICKEL-CHROMIUM STEELS
NIOBIUM ALLOYS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
REACTOR MATERIALS
REACTORS
SILICON ADDITIONS
SILICON ALLOYS
STEELS
SWELLING
TITANIUM ALLOYS