| Abstract Scope |
The microstructural characterization of materials is essential for validating and informing the models used in ICME. While there are well established workflows for understanding mean values, understanding sub-grain orientation gradients are critical for making accurate predictions in the amount of plastic strain within a material formed due to traditional thermo-mechanical processing, phase transformations, or residual stresses formed during rapid solidification. Here we will present new methods for evaluating the amount of plastic strain present in a material by applying advanced electron backscattered diffraction (EBSD) microscopy. We will show that by combining pattern denoising methods such as the NLPAR algorithm, along with new EBSD indexing methods that operate at high speeds, and high precision, one can detect grain misorientations that are below 0.2°, while collecting using typical scan conditions. As a case study, we will compare the orientation gradients in additive manufactured 316L stainless steel with newly developed CAFE-CP models. |