Speaker: Dr. Ricardo Lebensohn

MST-8, Materials Science in Radiation and Dynamics Extremes, LANL

In-situ 3-D Characterization and Direct Micromechanical Modelling for Identification of Microstructure-Property Relationships in Polycrystalline Materials

Abstract: 

In-situ non-destructive 3-D characterization and micromechanical formulations that can use input and be validated by those emerging methods are enabling a deeper understanding of microstructural effects on mechanical behavior of polycrystalline materials.

In this talk we report results of the synergistic combination of High Energy Diffraction Microscopy (HEDM) experiments performed in APS on metallic aggregates and polycrystal plasticity modelling based on Fast Fourier Transforms (FFT) with direct input from those measured microstructural images to predict their micromechanical response and establish microstructure-property relationships in these materials with unprecedented level of detail. Relevance of this work to MaRIE and further applications, e.g. to additively manufactured metals, will be discussed.