Enhancement of Corrosion Resistance and Mechanical Properties of Light- Weight Metals Through the Use of Graded Nonequilibrium Microstructures
Abstract
Designs for the future will place extreme demands on light-weight materials. In order to meet the challenges of the future it is vital that an emphasis be placed on tailor-making these materials to enhance specific properties. Through the use of rapid solidification processing advances have been made in our ability to engineer materials, but we have yet to be able to tailor-make a light-weight alloy with all of the characteristics we desire. A new approach to tailor-making alloys with the enhanced properties we desire is to use nonequilibrium alloying techniques such as sputter or high-rate vapor deposition to grade the structure and composition of an alloy during processing. Such alloys could be designed to take advantage of recent advances in enhancing both the mechanical properties and the corrosion resistance of Al and Mg. For conventional Al alloys, a combination of high strength and significantly enhanced corrosion resistance are mutually exclusive. In order to achieve high strengths, precipitates are necessary in the microstructure. Functionally graded materials, Nonequilibrium alloying, Corrosion resistant Al alloys, Corrosion resistant, Mg alloys
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1994
- Accession Number
- ADA286320
Entities
People
- Barbara A. Shaw
- Kelly Kennedy
Organizations
- Pennsylvania State University