High-strength, creep-resistant molybdenum alloy and process for producing the same
Abstract
A wet-doping process for producing an oxide-dispersion strengthened (ODS), creep-resistant molybdenum alloy is disclosed. The alloy is made by adding nitrate or acetate salts of lanthanum, cerium, thorium, or yttrium to molybdenum oxide to produce a slurry, heating the slurry in a hydrogen atmosphere to produce a powder, mixing and cold isostatically pressing the powder, sintering in a hydrogen atmosphere, and thermomechanically processing (swaging, extruding, cold drawing) the product. The ODS molybdenum alloy produced by the process contains 2-4% by volume (.about.1-4% by weight) of an oxide of lanthanum, cerium, thorium, or yttrium. The alloy has high strength and improved creep-resistance at temperatures greater than 0.55T.sub.m of molybdenum.
- Inventors:
-
- Finleyville, PA
- (Pittsburgh, PA)
- Pittsburgh, PA
- Issue Date:
- Research Org.:
- Westinghouse Electric Corp., Pittsburgh, PA (United States)
- OSTI Identifier:
- 872136
- Patent Number(s):
- 5868876
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
- DOE Contract Number:
- AC11-89PN38014
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- high-strength; creep-resistant; molybdenum; alloy; process; producing; wet-doping; oxide-dispersion; strengthened; disclosed; adding; nitrate; acetate; salts; lanthanum; cerium; thorium; yttrium; oxide; produce; slurry; heating; hydrogen; atmosphere; powder; mixing; cold; isostatically; pressing; sintering; thermomechanically; processing; swaging; extruding; drawing; product; produced; contains; 2-4; volume; 1-4; weight; strength; improved; creep-resistance; temperatures; 55t; hydrogen atmosphere; molybdenum oxide; acetate salts; isostatically pressing; cold drawing; molybdenum alloy; cold isostatic; dispersion strengthened; improved creep; doping process; creep-resistant molybdenum; /148/75/419/
Citation Formats
Bianco, Robert, Buckman, Jr., R. William, and Geller, Clint B. High-strength, creep-resistant molybdenum alloy and process for producing the same. United States: N. p., 1999.
Web.
Bianco, Robert, Buckman, Jr., R. William, & Geller, Clint B. High-strength, creep-resistant molybdenum alloy and process for producing the same. United States.
Bianco, Robert, Buckman, Jr., R. William, and Geller, Clint B. Fri .
"High-strength, creep-resistant molybdenum alloy and process for producing the same". United States. https://www.osti.gov/servlets/purl/872136.
@article{osti_872136,
title = {High-strength, creep-resistant molybdenum alloy and process for producing the same},
author = {Bianco, Robert and Buckman, Jr., R. William and Geller, Clint B},
abstractNote = {A wet-doping process for producing an oxide-dispersion strengthened (ODS), creep-resistant molybdenum alloy is disclosed. The alloy is made by adding nitrate or acetate salts of lanthanum, cerium, thorium, or yttrium to molybdenum oxide to produce a slurry, heating the slurry in a hydrogen atmosphere to produce a powder, mixing and cold isostatically pressing the powder, sintering in a hydrogen atmosphere, and thermomechanically processing (swaging, extruding, cold drawing) the product. The ODS molybdenum alloy produced by the process contains 2-4% by volume (.about.1-4% by weight) of an oxide of lanthanum, cerium, thorium, or yttrium. The alloy has high strength and improved creep-resistance at temperatures greater than 0.55T.sub.m of molybdenum.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}