|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Aluminum Alloys, Processing and Characterization
||Understanding Large-strain Softening of Aluminum in Shear at Elevated Temperature
||Michael E Kassner, Roya Ermagan
|On-Site Speaker (Planned)
Aluminum in pure shear to large strains at elevated temperature shows pronounced softening which has been attributed to a variety of phenomena. The most widely accepted early explanations involve the development of a texture leading to a decrease in the average Taylor factor. That is, there is a decrease in Schmid factors in the deformed grains. Very recent work suggests that the texture leads to softening through an increase in the dislocation climb stress. This appears to be particularly reasonable as dislocation climb is widely regarded the rate-controlling mechanism for high temperature plasticity.
||Planned: Light Metals