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Title: 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):
5,868,876
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 = {1999},
month = {2}
}