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 (ca. 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. 10 figs.
- Inventors:
- Issue Date:
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 321295
- Patent Number(s):
- 5868876
- Application Number:
- PAN: 8-856,503; TRN: 99:003330
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 9 Feb 1999
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; MOLYBDENUM ALLOYS; FABRICATION; LANTHANUM OXIDES; CERIUM OXIDES; THORIUM OXIDES; YTTRIUM OXIDES; MECHANICAL PROPERTIES; COMPOSITE MATERIALS
Citation Formats
Bianco, R, Buckman, Jr, R W, and Geller, C B. High-strength, creep-resistant molybdenum alloy and process for producing the same. United States: N. p., 1999.
Web.
Bianco, R, Buckman, Jr, R W, & Geller, C B. High-strength, creep-resistant molybdenum alloy and process for producing the same. United States.
Bianco, R, Buckman, Jr, R W, and Geller, C B. Tue .
"High-strength, creep-resistant molybdenum alloy and process for producing the same". United States.
@article{osti_321295,
title = {High-strength, creep-resistant molybdenum alloy and process for producing the same},
author = {Bianco, R and Buckman, Jr, R W and Geller, C 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 (ca. 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. 10 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 09 00:00:00 EST 1999},
month = {Tue Feb 09 00:00:00 EST 1999}
}