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:
-
- Idaho Falls, ID
- Madison, WI
- Issue Date:
- Research Org.:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- OSTI Identifier:
- 872309
- Patent Number(s):
- 5908486
- Assignee:
- Lockheed Martin Idaho Technologies Company (Idaho Falls, ID)
- 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:
- 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 = {1999},
month = {1}
}
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