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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 ({approximately}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:
; ;
Publication Date:
Research Org.:
Bettis Atomic Power Laboratory, West Mifflin, PA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
756784
Patent Number(s):
PATENTS-US-A8856503
Application Number:
8-856,503; TRN: AH200022%%60
Assignee:
DOEGC; EDB-00:057969
DOE Contract Number:  
AC11-89PN38014
Resource Type:
Patent Application
Resource Relation:
Patent File Date: 1997 May 15; Other Information: PBD: 1 Dec 1997
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; MOLYBDENUM ALLOYS; SYNTHESIS; MOLYBDENUM OXIDES; HEAT TREATMENTS; POWDER METALLURGY; PRESSING; SINTERING; LANTHANUM OXIDES; CERIUM OXIDES; THORIUM OXIDES; YTTRIUM OXIDES; MECHANICAL PROPERTIES

Citation Formats

Bianco, Robert, Buckman, Jr William R., and Geller, Clint B. High-strength, creep-resistant molybdenum alloy and process for producing the same. United States: N. p., 1997. Web.
Bianco, Robert, Buckman, Jr William R., & Geller, Clint B. High-strength, creep-resistant molybdenum alloy and process for producing the same. United States.
Bianco, Robert, Buckman, Jr William R., and Geller, Clint B. Mon . "High-strength, creep-resistant molybdenum alloy and process for producing the same". United States. https://www.osti.gov/servlets/purl/756784.
@article{osti_756784,
title = {High-strength, creep-resistant molybdenum alloy and process for producing the same},
author = {Bianco, Robert and Buckman, Jr William R. 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 ({approximately}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 = {1997},
month = {12}
}

Patent Application:

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