Effect of Strain and Strain Rate on the Microstructure of a Superplastically Deformed Al - 10%Mg-0.1%Zr Alloy.
Abstract
The deformation characteristics of two thermomechanically processed, high-Magnesium, Aluminum-Magnesium-Zirconium alloys were investigated. The processing included warm rolling at 300 C to 90-95% reduction. Tension testing was done at various temperatures and strain rates and superplastic elongations were observed for both alloys. Subsequently, samples of A1-10%Mg-0.1% Zr were tested at 300 C to strains ranging from 8% to 267% as well as to fracture. Strain rates of .00667/S and .000667/s were used. These were examined via TEM to observe microstructural changes which occur during deformation. Quantitative analysis of the functional relationship between stress, strain, strain rate, and grain size for this alloy is done in an attempt to fit it's deformation response to current models for superplastic deformation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1985
- Accession Number
- ADA159062
Entities
People
- M. E. Alcamo
Organizations
- Naval Postgraduate School