Method for heat treating iron-nickel-chromium alloy

Patent · Tue Nov 16 00:00:00 EST 1982

OSTI ID:6772855

Korenko, M K; Merrick, H F

A method for heat treating an age-hardenable iron-nickelchromium alloy to obtain a bimodal distribution of gamma prime phase within a network of dislocations, the alloy consisting essentially of about 25% to 45% nickel, 10% to 16% chromium, 1.5% to 3% of an element selected from the group consisting of molybdenum and niobium, about 2% titanium, about 3% aluminum, and the remainder substantially all iron. To obtain optimum results, the alloy is heated to a temperature of 1025/sup 0/ C to 1075/sup 0/ C for 2-5 minutes, cold-worked about 20% to 60%, aged at a temperatur of about 775/sup 0/ C for 8 hours followed by an air-cool, and then heated to a temperature in the range of 650/sup 0/ C to 700/sup 0/ C for 2 hours followed by an air-cool.

• Assignee: Dept. Of Energy
• Patent Number(s): US 4359349
• Application Number: TRN: 83-005157
• OSTI ID: 6772855
• Resource Relation: Patent File Date: Filed date 3 Apr 1980; Other Information: PAT-APPL-137049
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
CHROMIUM ALLOYS
HEAT TREATMENTS
IRON ALLOYS
NICKEL ALLOYS
CLADDING
COLD WORKING
FBR TYPE REACTORS
MECHANICAL PROPERTIES
SWELLING
ALLOYS
BREEDER REACTORS
DEPOSITION
EPITHERMAL REACTORS
FABRICATION
FAST REACTORS
MATERIALS WORKING
REACTORS
SURFACE COATING
360101* - Metals & Alloys- Preparation & Fabrication
210500 - Power Reactors
Breeding