|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Aluminum Alloys, Processing and Characterization
||O-3: Hot Deformation Behavior of Al2Ca Modified AA6082 Alloy Using Dynamic Material Model
||Sangmin Lee, Hyun-Jin Choi, Ji-Woon Lee, Taek-Kyun Jung, Soong-Keun Hyun, Young-OK Yoon, Shae K Kim
|On-Site Speaker (Planned)
Hot deformation experiments were carried out on Al2Ca modified AA6082 samples to analyze and establish the relation between the microstructural behavior and control process parameters such as temperature, strain and strain rate. The alloy was deformed by torsion in the temperature range of 623–773K and strain rate range of 0.05–5s-1. Based on the experimental data and dynamic materials model, the processing maps at strain of 0.2 to 3.0 were developed superimposing the instability map over dissipation efficiency map in the temperature and strain rate space. The results showed that the flow stress decreased with increasing deformation temperature, and increased with increasing strain rate. According to processing maps and microstructure observation, the optimum condition for hot working of AA6082 alloy was in range 723-773K and 0.05s-1. Under these favorable conditions uniform and fine grains were obtained by continuous dynamic recrystallization.
||Planned: Light Metals Volume