|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Coupling Experiments and Modeling to Understand Plasticity and Failure
||Simulation Study on Plasticity and Fracture in Aluminum Based on Real Microstructures
||Martin Diehl, Pratheek Shanthraj, Franz Roters, Dierk Raabe
|On-Site Speaker (Planned)
Mechanisms such as dislocation-mediated plasticity, damage nucleation, and crack propagation govern the mechanical behavior of metallic materials. Understanding the interplay among these mechanisms, i.e. knowing whether they amplify or damp each other, is therefore a prerequisite for the design of damage-resistant alloys. Here we present a simulation study conducted with a combined crystal plasticity—phase field fracture approach for the investigation of such coupling effects. More precisely, crack initiation and propagation and plasticity in aluminum alloys have been investigated. The microstructure models were obtained from experimental measurements. The influence of pore shape and crystallographic orientation was studied by creating a reference model with simplified spherical void and by assigning three different crystallographic orientations to the single crystal matrix material. The results show that crack initiation is dominated by the crystallographic orientation in the case of the simplified pore while the complex-shaped pore introduces stress peaks that dominate the fracture behavior.
||Planned: Supplemental Proceedings volume