HARD PARTICLE STRENGTHENING OF REFRACTORY METALS FOR HIGH TEMPERATURE USE THROUGH INTERNAL OXIDATION.
Abstract
Mo-1.5% Ti powder in the 2 to 50 micron size range was internally oxidized by the formation of a MoO2 film on the powder particles and TiO2 formation during a diffusion-sintering treatment. Diffusion-sintering was carried out in an Ar or H atmosphere to investigate the effects of this atmosphere on the resultant structure. Fabrication of Mo base powder compacts was improved by prior hot upsetting and vacuum canning before extrusion of alloy billets. The most successfully extruded alloys had a recrystallization temperature in excess of 2800 F and a yield strength greater than the tensile strength of arc cast Mo-1.5% Ti at 2200 F. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 31, 1961
- Accession Number
- AD0273142
Entities
People
- A. S. Bufferd
- K. M. Zwilsky
- N. J. Grant