|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Advanced High Strength Steels V
||High-resolution Integrated Experimental-numerical Testing of Ferrite-pearlite Steels
||Tijmen Vermeij, Samaneh Isavand, Johan Hoefnagels
|On-Site Speaker (Planned)
Micromechanical deformation mechanisms are unraveled in ferrite-pearlite steels by experimental-numerical integration of high-resolution microstructure mapping and nanoscale experimental and numerical strain measurements. High-resolution SEM-DIC is employed to unravel strain localization at the scale of ferrite and pearlite grains/colonies, and ferrite and cementite lamellae, all the way up to damage initiation and evolution. Interesting insights are obtained on ferrite-cementite interface deformation, ferrite-pearlite near-interface damage, and highly plastic versus relatively brittle behavior of cementite. Furthermore, careful replication of the experiments is achieved in advanced FFT based crystal plasticity simulations on the exact same (surface) microstructure and boundary conditions as in the experiments. A critical comparison of experiments and simulations highlights the crucial ingredients and shortcomings of the simulations and demonstrates that a good quantitative agreement is not trivially found, paving the way towards better predictive capabilities in the future.
||Mechanical Properties, Iron and Steel, Modeling and Simulation