, Volume 52, Issue 2, pp 237-255

A hybrid crystal plasticity and phase transformation model for high carbon steel

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Abstract

Presence of retained austenite in two-phase steels can have a significant effect on the response of the material. The current state-of-the-art in multi-phase modeling of polycrystalline plasticity has limits on scaling, explicit phase modeling, and tracking multiple plasticity types. To address these issues, a hybrid material model is developed for high-carbon steels. The model can account for crystal plasticity of martensite and stress-assisted transformation from austenite to martensite in dual-phase high-carbon steel. The parameters of the model are calibrated to experimental stress-strain and volumetric transformation strain data. The combination of scalability and multiple phase representation gives a useful tool for the investigation of two-phase high-carbon steel behavior.