Evaluation of Metal Composites for Use in Weapon Components.
Abstract
The concept of increasing the strength of cobalt-base alloys by dispersion hardening with a stable MC carbide was investigated. A powder metallurgy process was used to allow the cobalt alloy matrix and the specific carbide to be selected independently and combined in optimum proportions. A number of fabrication procedures have been evaluated, the most successful to date being one in which the composite is prepared by hot pressing a mixture of the elemental metal powders with fine carbide powder. On the basis of tensile strength, room temperature ductility, and oxidation resistance considerations, a composite of Co-21 w/o Cr-26 w/o Ni with 10 w/o TiC-50% VC was selected for study. The high temperature tensile properties of this composite compare very favorably with those of the current commercially available cobalt base superalloys. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1973
- Accession Number
- AD0766288
Entities
People
- Carolyn M. Preece
- Walter Precht
Organizations
- Martin Marietta