Iron-nickel-chromium alloy having improved swelling resistance and low neutron absorbence

Patent · 31 December 1985

OSTI ID:865796

Korenko, Michael K ^[1]

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1. Richland, WA

An iron-nickel-chromium age-hardenable alloy suitable for use in fast breeder reactor ducts and cladding which utilizes the gamma-double prime strengthening phase and characterized in having a delta or eta phase distributed at or near grain boundaries. The alloy consists essentially of about 33-39.5% nickel, 7.5-16% chromium, 1.5-4% niobium, 0.1-0.7% silicon, 0.01-0.2% zirconium, 1-3% titanium, 0.2-0.6% aluminum, and the remainder essentially all iron. Up to 0.4% manganese and up to 0.010% magnesium can be added to inhibit trace element effects.

• Research Organization: Hanford Engineering Development Lab., Richland, WA (USA)
• DOE Contract Number: EY-76-C-14-2170
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4578130
• OSTI ID: 865796
• Country of Publication: United States
• Language: English

Related Subjects

/148/420/
01-0
010
1-0
1-3
2-0
33-39
5-16
5-4
absorbence
added
age-hardenable
age-hardenable alloy
alloy
alloy consists
alloy suitable
aluminum
boundaries
breeder
breeder reactor
characterized
chromium
chromium alloy
cladding
consists
consists essentially
delta
distributed
ducts
effects
element
essentially
eta
fast
fast breeder
gamma-double
gamma-double prime
grain
grain boundaries
improved
improved swelling
inhibit
iron
iron-nickel-chromium
iron-nickel-chromium age-hardenable
iron-nickel-chromium alloy
magnesium
manganese
near
neutron
neutron absorbence
nickel
niobium
phase
prime
prime strengthening
reactor
reactor duct
reactor ducts
remainder
resistance
silicon
strengthening
strengthening phase
suitable
swelling
swelling resistance
titanium
trace
trace element
utilizes
zirconium