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:
-
- Richland, WA
- Issue Date:
- Research Org.:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- OSTI Identifier:
- 863663
- Patent Number(s):
- 4225363
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C21 - METALLURGY OF IRON C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
- 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 = {Tue Jan 01 00:00:00 EST 1980},
month = {Tue Jan 01 00:00:00 EST 1980}
}
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