Study on Dynamic Recrystallization in the Plastic Deformation Zone of Vibration Cast‐Rolling

Abstract

In the comparative experiments of vibration and non-vibration cast-rolling, it is found that the vibration can significantly enhance the dynamic recrystallization effect in the plastic deformation stage during cast-rolling. In order to explore the strengthening mechanism, the physical simulation experiment and the numerical simulation based on Yada model are used to study the plastic deformation stage of the cast-rolling process. The research results show that the Yada model can accurately calculate the change history of grain size during vibration rolling. It is also found that the vibration frequency can promote the recrystallization nucleation by changing the equivalent plastic strain in the cast-rolling strip during deformation, thereby effectively reducing the average grain size, whereas the amplitude only affects the start time of the dynamic recrystallization. In addition, it is found that vibration can effectively improve the uneven distribution of grain size on the cross section of cast-rolling strip.

A Review of the Twin-roll Casting Process for Complex Section Products

“…However, the rolling process, similar to the third method, has made significant progress in fabricating LVP strips in recent years. [45][46][47] Du et al [48][49][50] proposed a vibration TRC process, as shown in Fig. 8(a).…”

“…Vibration TRC process: (a) schematic diagram, (b) comparison of cast-rolling zone, (c) comparison of strips. [48][49][50] (Online version in color.) interfacial bonding can be formed between the substrate and cladding.…”