|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advanced Characterization Techniques for Quantifying and Modeling Deformation
||Experimental Characterization and Explicit Slip Band Micromechanical Modeling of Slip Localization in FCC and HCP Metals
||Behnam Ahmadikia, Jean Charles Stinville, Tresa M. Pollock, Irene J. Beyerlein
|On-Site Speaker (Planned)
Recent advances in microscopy and digital image correlation methods have enabled quantitative features of slip bands, such as localization intensity and slip band spacing, to be characterized in a vast range of materials including FCC and HCP metals. Experimental measurements reveal that, regardless of crystal structure, a material with a higher yield strength tends to have larger amplitudes of slip localized within slip bands with wider spacings. A slip-band full-field fast Fourier transform-based model is applied to determine the propensity for slip localization in these materials and to investigate the resulting changes in local stress and strain fields. Modeling results find that, in a stronger material, while slip accommodation within the slip band reduces resistance for further slip to glide by a greater degree, the area affected by a reaction stress developed around a fully formed band is larger, making it more difficult for a new band to form nearby.
||Characterization, Computational Materials Science & Engineering, Modeling and Simulation