|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Coupling Experiments and Modeling to Understand Plasticity and Failure
||E-10: Investigation of Deformation Mechanisms in Columnar Aluminum
||Marissa Linne, Samantha Daly
|On-Site Speaker (Planned)
Microstructure plays a significant role in local plastic deformation, but studying its impact is a complex problem due in part to interactions between deformation mechanisms. Current research and modeling of plasticity largely treat deformation mechanisms as separate events. Thus, the relationships between deformation activity and microstructural features remain unclear and supported by limited experimental data, making it difficult to predict damage localization and hindering predictive modeling capabilities. This research is aimed towards understanding mechanism-mechanism relationships and how they are affected by local microstructure in polycrystalline columnar pure aluminum. High-resolution strain fields and grain orientations are acquired in-SEM and statistically analyzed to identify deformation trends with respect to local microstructure. Results from this experimental work and a parallel crystal plasticity modeling effort with the Sangid Group at Purdue are aimed towards improving predictions of damage-inducing stress localization, and ultimately towards improving the capability to develop materials with greater resistance to failure.
||Planned: Supplemental Proceedings volume