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Work-hardening of dual-phase steel

Author: Rieger, Florian
Source: Directory of Open Access Books
Publisher: KIT Scientific Publishing
ISBN: 9783731505136
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Dual-phase steels exhibit good mechanical properties due to a microstructure of strong martensitic inclusions embedded in a ductile ferritic matrix. This work presents a two-scale model for the underlying work-hardening effects; such as the distinctly different hardening rates observed for high-strength dual-phase steels. The model is based on geometrically necessary dislocations and comprises the average microstructural morphology as well as a direct interaction between the constituents.