Processing, Structure and Properties of Heavily Deformed in Situ Composites.
Abstract
This report describes the results of work conducted on the properties, structure, processing and thermal stability of heavily cold worked two phase metallic alloys. These are also known as heavily deformed in situ composites (HDISC). The primary reason for studying these kinds of materials is that two phase materials work harden more rapidly than do single phase ones (1-6). In fact, when subjected to true deformation strains greater than about three, strengths of two phase combinations usually significantly exceed those expected by volumetrically averaging the strengths developed in the single phase constituents subjected to the same strains. At true deformation strains on the order of ten, strengths approaching the theoretical ones are obtained in some two phase metal combinations. This enhanced strain hardening has been observed in a number of two phase metal alloys. Examples include silver-copper, silver-ion, copper-iron, copper-niobium, silver-nickel, copper-chromium, and nickel-tungsten. There is another reason for studying these materials. In particular, their fabrication takes place by relatively straightforward means, and thus they offer the potential for developing relatively inexpensive metal matrix composites.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 05, 1987
- Accession Number
- ADA189611
Entities
People
- J. K. Lee
- T. H. Courtney
Organizations
- Michigan Technological University