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 (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.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Patent Number(s):
- US 5,868,876/A/
- Application Number:
- PAN: 8-856,503; TRN: 99:003330
- OSTI ID:
- 321295
- Resource Relation:
- Other Information: PBD: 9 Feb 1999
- Country of Publication:
- United States
- Language:
- English
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High-strength, creep-resistant molybdenum alloy and process for producing the same
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