Investigation of the Hot Deformation Behavior of an Al-Mg-Sc-Zr Alloy under Plane Strain Condition

Abstract:

This study investigates the hot deformation behavior of a new Al-Mg-Sc-Zr alloy under plane strain conditions. Flow curves corrected for deformation heating were calculated for strain rates between 0.01 and 10s^-1 in a temperature range of 200 to 400°C. To evaluate the deformation behavior, strain rate sensitivity as well as flow localization parameter maps were calculated for strains of 0.2, 0.4, and 0.6. In addition, microstructural investigations and hardness measurements were performed for selected samples. It was shown that the flow stress decreased with deacreasing strain rate and increasing temperature. The best formability was observed for high strain rates and low temperatures as well as for low strain rates and high temperatures. In these cases no flow instabilities were observed.

• Periodical: Key Engineering Materials (Volumes 611-612)
• Pages: 76-83
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.611-612.76
• Online since: May 2014
• Authors: Johannes Taendl*, Martina Dikovits, Maria Cecilia Poletti
• Keywords: Al-Sc Alloy, Hot Deformation, Plane Strain, Recrystallization, Strain Rate Sensitivity

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