High-strength, creep-resistant molybdenum alloy and process for producing the same
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.
- Research Organization:
- Bettis Atomic Power Laboratory, West Mifflin, PA (US)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- AC11-89PN38014
- Assignee:
- DOEGC; EDB-00:057969
- Patent Number(s):
- PATENTS-US-A8856503
- Application Number:
- 8-856,503; TRN: AH200022%%60
- OSTI ID:
- 756784
- Resource Relation:
- Patent File Date: 1997 May 15; Other Information: PBD: 1 Dec 1997
- Country of Publication:
- United States
- Language:
- English
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