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Title: Strengthening of metallic alloys with nanometer-size oxide dispersions

Abstract

Austenitic stainless steels and nickel-base alloys containing, by wt. %, 0.1 to 3.0% V, 0.01 to 0.08% C, 0.01 to 0.5% N, 0.05% max. each of Al and Ti, and 0.005 to 0.10% O, are strengthened and ductility retained by atomization of a metal melt under cover of an inert gas with added oxygen to form approximately 8 nanometer-size hollow oxides within the alloy grains and, when the alloy is aged, strengthened by precipitation of carbides and nitrides nucleated by the hollow oxides. Added strengthening is achieved by nitrogen solid solution strengthening and by the effect of solid oxides precipitated along and pinning grain boundaries to provide temperature-stabilization and refinement of the alloy grains.

Inventors:
 [1];  [2]
  1. (Idaho Falls, ID)
  2. (Madison, WI)
Publication Date:
Research Org.:
Idaho National Engineering and Environmental Laboratory, Idaho Falls, ID
OSTI Identifier:
872309
Patent Number(s):
US 5908486
Assignee:
Lockheed Martin Idaho Technologies Company (Idaho Falls, ID) INEEL
DOE Contract Number:  
AC07-94ID13223
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
strengthening; metallic; alloys; nanometer-size; oxide; dispersions; austenitic; stainless; steels; nickel-base; containing; wt; 01; 08; 05; max; 005; 10; strengthened; ductility; retained; atomization; metal; melt; cover; inert; gas; added; oxygen; form; approximately; hollow; oxides; alloy; grains; aged; precipitation; carbides; nitrides; nucleated; achieved; nitrogen; solid; solution; effect; precipitated; pinning; grain; boundaries; provide; temperature-stabilization; refinement; nickel-base alloys; metallic alloys; metallic alloy; base alloy; base alloys; alloys containing; stainless steels; grain boundaries; stainless steel; solid oxide; inert gas; austenitic stainless; solid solution; alloys contain; metal melt; nickel-base alloy; /75/148/

Citation Formats

Flinn, John E., and Kelly, Thomas F.. Strengthening of metallic alloys with nanometer-size oxide dispersions. United States: N. p., 1999. Web.
Flinn, John E., & Kelly, Thomas F.. Strengthening of metallic alloys with nanometer-size oxide dispersions. United States.
Flinn, John E., and Kelly, Thomas F.. Fri . "Strengthening of metallic alloys with nanometer-size oxide dispersions". United States. https://www.osti.gov/servlets/purl/872309.
@article{osti_872309,
title = {Strengthening of metallic alloys with nanometer-size oxide dispersions},
author = {Flinn, John E. and Kelly, Thomas F.},
abstractNote = {Austenitic stainless steels and nickel-base alloys containing, by wt. %, 0.1 to 3.0% V, 0.01 to 0.08% C, 0.01 to 0.5% N, 0.05% max. each of Al and Ti, and 0.005 to 0.10% O, are strengthened and ductility retained by atomization of a metal melt under cover of an inert gas with added oxygen to form approximately 8 nanometer-size hollow oxides within the alloy grains and, when the alloy is aged, strengthened by precipitation of carbides and nitrides nucleated by the hollow oxides. Added strengthening is achieved by nitrogen solid solution strengthening and by the effect of solid oxides precipitated along and pinning grain boundaries to provide temperature-stabilization and refinement of the alloy grains.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1999},
month = {Fri Jan 01 00:00:00 EST 1999}
}

Patent:

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