DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Dispersoid reinforced alloy powder and method of making

Abstract

A method of making dispersion-strengthened alloy particles involves melting an alloy having a corrosion and/or oxidation resistance-imparting alloying element, a dispersoid-forming element, and a matrix metal wherein the dispersoid-forming element exhibits a greater tendency to react with a reactive species acquired from an atomizing gas than does the alloying element. The melted alloy is atomized with the atomizing gas including the reactive species to form atomized particles so that the reactive species is (a) dissolved in solid solution to a depth below the surface of atomized particles and/or (b) reacted with the dispersoid-forming element to form dispersoids in the atomized particles to a depth below the surface of said atomized particles. The atomized alloy particles are solidified as solidified alloy particles or as a solidified deposit of alloy particles. Bodies made from the dispersion strengthened alloy particles, deposit thereof, exhibit enhanced fatigue and creep resistance and reduced wear as well as enhanced corrosion and/or oxidation resistance at high temperatures by virtue of the presence of the corrosion and/or oxidation resistance imparting alloying element in solid solution in the particle alloy matrix.

Inventors:
;
Issue Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1398990
Patent Number(s):
9782827
Application Number:
14/121,415
Assignee:
Iowa State University Research Foundation, Inc.
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
DOE Contract Number:  
W-7405-ENG-82
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Sep 03
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Anderson, Iver E., and Terpstra, Robert L. Dispersoid reinforced alloy powder and method of making. United States: N. p., 2017. Web.
Anderson, Iver E., & Terpstra, Robert L. Dispersoid reinforced alloy powder and method of making. United States.
Anderson, Iver E., and Terpstra, Robert L. Tue . "Dispersoid reinforced alloy powder and method of making". United States. https://www.osti.gov/servlets/purl/1398990.
@article{osti_1398990,
title = {Dispersoid reinforced alloy powder and method of making},
author = {Anderson, Iver E. and Terpstra, Robert L.},
abstractNote = {A method of making dispersion-strengthened alloy particles involves melting an alloy having a corrosion and/or oxidation resistance-imparting alloying element, a dispersoid-forming element, and a matrix metal wherein the dispersoid-forming element exhibits a greater tendency to react with a reactive species acquired from an atomizing gas than does the alloying element. The melted alloy is atomized with the atomizing gas including the reactive species to form atomized particles so that the reactive species is (a) dissolved in solid solution to a depth below the surface of atomized particles and/or (b) reacted with the dispersoid-forming element to form dispersoids in the atomized particles to a depth below the surface of said atomized particles. The atomized alloy particles are solidified as solidified alloy particles or as a solidified deposit of alloy particles. Bodies made from the dispersion strengthened alloy particles, deposit thereof, exhibit enhanced fatigue and creep resistance and reduced wear as well as enhanced corrosion and/or oxidation resistance at high temperatures by virtue of the presence of the corrosion and/or oxidation resistance imparting alloying element in solid solution in the particle alloy matrix.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {10}
}

Works referenced in this record:

Metal Dispersoid Powder Compositions
patent, June 1973


Process for Making Sintered Articles
patent, November 1973


Method for preparing magnetic alloy powder by surface nitriding
patent, September 1975


Dispersion strengthened metals
patent, June 1981


Hard ferrite powder and process for the preparation thereof
patent, June 1982


Method for making rare-earth element containing permanent magnets
patent, April 1986


Process for producing permanent magnet materials
patent, July 1986


Method for manufacturing permanent magnets
patent, January 1989


Sintered ferro alloy having heat and wear resistance and process for making
patent, October 1990


Dispersion strengthened copper alloy and a method of manufacturing the same
patent, April 1991


Fine hollow particles of metals and metal alloys and their production
patent, June 1991


Process for producing powdered aluminum alloys
patent, February 1992


Producing void-free metal alloy powders by melting as well as atomization under nitrogen ambient
patent, May 1992


Atomizing nozzle and process
patent, June 1992


Atomizing apparatus and process
patent, March 1993


Gas atomization synthesis of refractory or intermetallic compounds and supersaturated solid solutions
patent, November 1994


Method of making environmentally stable reactive alloy powders
patent, December 1994


Sintered metal bodies and manufacturing method therefor
patent, June 1995


Highly rigid composite material and process for its manufacture
patent, October 1995


Fe-based sintered alloy having wear resistance
patent, February 1996


Production process for Fe-based sintered alloy valve seat
patent-application, July 2004


Ni-based sintered alloy
patent-application, May 2005