|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Materials Processing Fundamentals
||Thermomechanical Analysis and Experimental Validation of ECAP for Aluminum Sheet Metal
||Maximilian Gruber, Yiheng Yang, Christian Illgen, Philipp Frint, Martin F.-X. Wagner, Wolfram Volk
|On-Site Speaker (Planned)
Equal-channel angular pressing (ECAP) is an established method for the improvement of mechanical properties by grain refinement through shear strains. While there is a profound knowledge about ECAP of bulk materials, there is only little information on the effect of ECAP on sheet metals. In this contribution a thermomechanical simulation model was used to examine the novel process. The simulation was performed to investigate the dissipated forming heat and the heat due to friction. To validate the numerical results, experiments with the ECAP-tool for sheet metal were performed. By drilling holes in the sheet material the forming temperature could be measured with thermocouples and the friction of the simulation could be calibrated inversely, since all material parameters could be determined experimentally. In this way, fundamental correlations between the heat development in the process, the experimental parameters and setup and the shear strain implied in the material could be worked out.