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Title: Method for heat treating iron-nickel-chromium alloy

Abstract

A method for heat treating an age-hardenable iron-nickel-chromium 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.degree. C. to 1075.degree. C. for 2-5 minutes, cold-worked about 20% to 60%, aged at a temperature of about 775.degree. C. for 8 hours followed by an air-cool, and then heated to a temperature in the range of 650.degree. C. to 700.degree. C. for 2 hours followed by an air-cool.

Inventors:
 [1];  [2]
  1. (Suffern, NY)
  2. (Rockville, MD)
Issue Date:
Research Org.:
Hanford Engineering Development Lab., Richland, WA (USA)
OSTI Identifier:
864397
Patent Number(s):
4359349
Assignee:
United States of America as represented by United States (Washington, DC) OSTI
DOE Contract Number:  
EY-76-C-14-2170
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; heat; treating; iron-nickel-chromium; alloy; age-hardenable; obtain; bimodal; distribution; gamma; prime; phase; network; dislocations; consisting; essentially; 25; 45; nickel; 10; 16; chromium; element; selected; molybdenum; niobium; titanium; aluminum; remainder; substantially; iron; optimum; results; heated; temperature; 1025; degree; 1075; 2-5; minutes; cold-worked; 20; 60; aged; 775; hours; followed; air-cool; range; 650; 700; gamma prime; iron-nickel-chromium alloy; consisting essentially; element selected; heat treating; alloy consisting; prime phase; chromium alloy; treating iron-nickel-chromium; age-hardenable iron-nickel-chromium; /148/

Citation Formats

Merrick, Howard F., and Korenko, Michael K. Method for heat treating iron-nickel-chromium alloy. United States: N. p., 1982. Web.
Merrick, Howard F., & Korenko, Michael K. Method for heat treating iron-nickel-chromium alloy. United States.
Merrick, Howard F., and Korenko, Michael K. Fri . "Method for heat treating iron-nickel-chromium alloy". United States. https://www.osti.gov/servlets/purl/864397.
@article{osti_864397,
title = {Method for heat treating iron-nickel-chromium alloy},
author = {Merrick, Howard F. and Korenko, Michael K.},
abstractNote = {A method for heat treating an age-hardenable iron-nickel-chromium 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.degree. C. to 1075.degree. C. for 2-5 minutes, cold-worked about 20% to 60%, aged at a temperature of about 775.degree. C. for 8 hours followed by an air-cool, and then heated to a temperature in the range of 650.degree. C. to 700.degree. C. for 2 hours followed by an air-cool.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {1}
}

Patent:

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