Accession Number:

AD0766288

Title:

Evaluation of Metal Composites for Use in Weapon Components.

Descriptive Note:

Technical rept.,

Corporate Author:

MARTIN MARIETTA CORP BALTIMORE MD RESEARCH INST FOR ADVANCED STUDIES

Personal Author(s):

Report Date:

1973-07-01

Pagination or Media Count:

28.0

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 wo Cr-26 wo Ni with 10 wo 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

Subject Categories:

  • Laminates and Composite Materials
  • Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE