|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Computational Design and Simulation of Materials (CDSM 2018): Meso/Macroscale Simulations
||A Dislocation Density Based Multiscale Characterization of High Pressure Torsion and Cold Rolled Polycrystalline Copper Microstructure
||Mehdi Hamid, Maryam Jamalian, Hussein Zbib, David Field
|On-Site Speaker (Planned)
In this work, the effect of cold rolling and high pressure torsion on pure polycrystalline copper microstructures will be analyzed and compared in terms of their mechanical behaviors. Strength and ductility are the key mechanical properties. EBSD and nanoindentation will be done to characterize microstructures and stress-strain responses of the samples respectively. The microstructures of the samples will be used as input to the VPFT-CDD (Visco plastic self consistent –fast Fourier transforms- Continuum dislocation dynamics) framework to simulate the mechanical behavior of the samples. The effect of dislocation density gradients, grain size gradients, and grain boundary effects on strength and ductility of these nano-structured polycrystals is analyzed for copper samples. The simulation results are compared with experimental results to validate the model.
||Planned: Supplemental Proceedings volume