Determination of critical conditions for dynamic recrystallization of a microalloyed steel

Hot deformation behavior of a medium carbon microalloyed steel

“…The linear regression of these data, results in the average values of 377, 397 and 394 kJ/mol for activation energy form Eqs. (12), (13) and (14), respectively. Analysis of the correlation coefficient (R 2 ) of these regression values reveals that the hyperbolic sine equation (Eq.…”

Quantitative Analysis of Work Hardening and Dynamic Softening Behavior of low carbon alloy Steel Based on the Flow Stress

“…8 that the work hardening rate decreasing sharply at low Z values and the decreasing rate becomes slower with increasing Z value which indicates that the softening behavior is not so pronounced at the condition of high Z. According the work by Shaban [41] that DRX can occur when the work hardening rate reaches to zero firstly and the first cycle of DRX come to the end when work hardening rate reaches to zero again with the increasing strain. Therefore, it can be known from Fig.…”

Influence of Rare Earth on Dynamic Recrystallization Behavior of As‐Cast 30Mn Steel

“…As can be seen from Figure 5 under the same deformation conditions, dynamic recrystallization kinetics curves of tendency of #1 and #2 sample are basically the same. On one hand, it can be seen that all the characteristic curves are in sigmoidal manner with respect to time, which indicates that the dynamic recrystallization volume fraction increases with the strain increasing, remarkably in the middle and then slowly near the end of deformation [22]. On the other hand, for #1 and #2 samples, when the temperature is constant, the increase of strain rate results in the increase of the strain required for the same DRX volume fraction, which indicates that DRX is delayed with the increase of strain rate.…”