|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Ultrafine Grained Materials IX
||Process-mechanics-structure Framework for Surface Severe Plastic Deformation
||Saurabh Basu, Zhiyu Wang, Christopher Saldana
|On-Site Speaker (Planned)
Surface severe plastic deformation by mechanical attrition is attractive for endowing metal components with enhanced and functionally-graded thermomechanical properties. As surface and subsurface microstructure evolution is deterministically controlled by deformation zone geometry and thermo-mechanical variables in surface severe plastic deformation, there is substantial interest in capturing high fidelity process-mechanics-structure frameworks for facilitating design and process control. However, the inherent stochasticity of surface mechanical attrition presents difficulties from a modeling perspective. In this study, we present a stochastic finite element method model for mechanical attrition of pure copper and magnesium alloy AZ31B. These finite element results are used with the visco-plastic self-consistent framework to predict and calibrate the simulation of texture evolution in surface severe plastic deformation. Implications for using these calibrated models in frameworks for engineering surface properties and microstructures are briefly discussed.