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Influence of Rare Earth on Dynamic Recrystallization Behavior of As-Cast 30Mn Steel
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Influence of Rare Earth on Dynamic Recrystallization Behavior of As-Cast 30Mn Steel
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Influence of Rare Earth on Dynamic Recrystallization Behavior of As-Cast 30Mn Steel
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Journal Article
Influence of Rare Earth on Dynamic Recrystallization Behavior of As-Cast 30Mn Steel
2018
Overview
Based on casting-rolling compound forming process, the effect of rare earth on dynamic recrystallization (DRX) of as-cast 30Mn steel was investigated by the single-pass hot compression tests performed using a Gleeble-3500 thermomechanical simulator, and the deformation temperature range was 950°C–1150°C and strain rate range was 0.1–1 s−1. With the assistance of the process parameters, constitutive equations were used to obtain the activation energy and hot working equation. The dynamic recrystallization kinetics models of the tested steel were constructed. The results show that rare earth ferrosilicon alloy addition (0.2%, mass fraction) can delay the onset of DRX significantly and refine the hot deformation microstructures. All of the results indicate that the addition of rare earth into as-cast 30Mn steel is helpful to prepare excellent cast slab for the casting-rolling compound forming technology.
