Coupling of Creep Deformation Mechanism Equations and Dynamic Recrystallization Kinetics for the Calculation of Processing Maps for Metallic Alloys

초록

In the present work, kinetic equations of dynamic recrystallization and high-temperature deformation mechanism equations were coupled to calculate and construct processing maps for metallic alloys in 2D and 3D. The validity of this method was confirmed for selected materials (Mg and Fe alloys) by comparing the calculated processing maps with those constructed based on experimental data. The effect of the initial grain size on the processing maps was predicted. The proposed analysis method is innovative because the processing map for a material of interest can be calculated as a function of strain rate, temperature and strain under any deformation condition once the dynamic recrystallization kinetics and the creep deformation equations for the material are known. Furthermore, the proposed method can provide information regarding the rate-controlling creep deformation mechanism and microstructural evolution at any location on the processing maps.

키워드