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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 morphology of the gamma-double prime phase enveloping the gamma-prime phase, the alloy consisting essentially of about 40 to 50% nickel, 7.5 to 14% chromium, 1.5 to 4% niobium, 0.3 to 0.75% silicon, 1 to 3% titanium, 0.1 to 0.5% aluminum, 0.02 to 1% carbon, 0.002 to 0.0015% boron and the remain substantially all iron. To obtain optimal results, the alloy is cold-worked 20 to 60% followed by heating at 1050.degree. C. for 1/2 hour with an air-cool plus heating at 800.degree. C. for 2 hours with a furnace cool to 625.degree. C. The alloy is then held at 625.degree. C. for 12 hours, followed by an air-cool.

Inventors:
 [1]
  1. (Richland, WA)
Issue Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
OSTI Identifier:
863663
Patent Number(s):
4225363
Assignee:
United States of America as represented by United States (Washington, DC) PNNL
DOE Contract Number:  
E(45-1)-2170
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; heat; treating; iron-nickel-chromium; alloy; age-hardenable; obtain; morphology; gamma-double; prime; phase; enveloping; gamma-prime; consisting; essentially; 40; 50; nickel; 14; chromium; niobium; 75; silicon; titanium; aluminum; 02; carbon; 002; 0015; boron; remain; substantially; iron; optimal; results; cold-worked; 20; 60; followed; heating; 1050; degree; hour; air-cool; plus; 800; hours; furnace; cool; 625; held; 12; iron-nickel-chromium alloy; consisting essentially; heat treating; remain substantially; gamma-double prime; alloy consisting; prime phase; chromium alloy; phase enveloping; treating iron-nickel-chromium; gamma-prime phase; age-hardenable iron-nickel-chromium; /148/

Citation Formats

Korenko, Michael K. Method for heat treating iron-nickel-chromium alloy. United States: N. p., 1980. Web.
Korenko, Michael K. Method for heat treating iron-nickel-chromium alloy. United States.
Korenko, Michael K. Tue . "Method for heat treating iron-nickel-chromium alloy". United States. https://www.osti.gov/servlets/purl/863663.
@article{osti_863663,
title = {Method for heat treating iron-nickel-chromium alloy},
author = {Korenko, Michael K.},
abstractNote = {A method for heat treating an age-hardenable iron-nickel-chromium alloy to obtain a morphology of the gamma-double prime phase enveloping the gamma-prime phase, the alloy consisting essentially of about 40 to 50% nickel, 7.5 to 14% chromium, 1.5 to 4% niobium, 0.3 to 0.75% silicon, 1 to 3% titanium, 0.1 to 0.5% aluminum, 0.02 to 1% carbon, 0.002 to 0.0015% boron and the remain substantially all iron. To obtain optimal results, the alloy is cold-worked 20 to 60% followed by heating at 1050.degree. C. for 1/2 hour with an air-cool plus heating at 800.degree. C. for 2 hours with a furnace cool to 625.degree. C. The alloy is then held at 625.degree. C. for 12 hours, followed by an air-cool.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

Patent:

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