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ABSTRACT The present work quantifies the contribution of constituting phases to the strain hardening in a medium-Mn steel during Lüders deformation. The strain hardening of the ferrite matrix (∼ 46.1 MPa)… Click to show full abstract
ABSTRACT The present work quantifies the contribution of constituting phases to the strain hardening in a medium-Mn steel during Lüders deformation. The strain hardening of the ferrite matrix (∼ 46.1 MPa) is much lower than that of the austenite phase (∼ 116 MPa). The large difference of strain hardening behaviour between ferrite and austenite phases is ascribed to a martensitic transformation. Thus, the transformation-induced plasticity effect in retained austenite is the main contributor to the strain hardening during Lüders deformation of the present medium-Mn steel.
Journal Title: Philosophical Magazine Letters
Year Published: 2021
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