Evaluation of Oxide Dispersion Strengthened (ODS) Molybdenum Alloys
Abstract
A series of fourteen (14) novel high-strength molybdenum alloy compositions containing a dispersion of very fine (< 1 micron diameter) oxide particles were consolidated using two proprietary powder metallurgy techniques. The developmental compositions were evaluated to determine the microstructural stability and mechanical properties from cryogenic (-148 deg F) to elevated temperatures (4000 deg F) for material in the as-swaged (>98% cold work) condition and for as-swaged material in the heat treated condition. Extremely fine oxide particle sizes (<1000 A) were observed by Transmission Electron Microscopy (TEM) for a number of the experimental compositions in the as-swaged condition. A one hour recrystallization temperature as high as 3990 deg F was measured and a ductile-to-brittle transition temperature as low as -58 deg F for material in the recrystallized condition was determined. The preliminary results support the alloy design concept feasibility.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1997
- Accession Number
- ADA347305
Entities
People
- R. W. Buckman Jr
- Robert Blanco