|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Materials Processing Fundamentals
||A Systems Approach for Modeling the Dynamic Thermomechanical Response of Carbon Steels
||Shengyen Li, Steven Mates, Mark Stoudt, Carelyn Campbell, Greta Lindwall, Sindhura Gangireddy
|On-Site Speaker (Planned)
In manufacturing processes, workpiece materials are subjected to rapid heating, high loading rates and large plastic strains. Depending on the temperatures involved, the phase transformations can occur that significantly affects the mechanical behavior. For example, the initial pearlite/ferrite steel system can transform into a pearlite/ferrite/austenite microstructure, drastically reducing alloy strength. To capture this behavior, we use diffusion-controlled models along with dislocation-mechanics based constitutive model to predict time-dependent plastic deformation under rapid heating and loading. The systems approach to this problem includes data collection, model simulation, and software application, with a workflow concept based on easy entry from microstructure information, thermomechanical data, to mechanical measurements, into a materials data curation system (MDCS). The MDCS supports essential information to calibrate phase-based models, being applied to different sets of experimental conditions. This systems approach is designed for other materials systems and/or different micromechanical behaviors, such as dynamic strain ageing in steels.
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