|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||The Evolution of Grain Structure of pure iron during Directional Recrystallization
||Ye Cui, Naimeng Liu, Xianliang Xin, Yang Zhang, Dan Chen, Zhongwu Zhang
|On-Site Speaker (Planned)
In this paper, the evolution of grain structure and its mechanism of pure iron during directional recrystallization were investigated. The pure iron with different columnar-grained structures could be produced by directional recrystallization with different hot zone temperatures (HZTs) and withdrawing velocities. The results indicate that there is a optimum withdrawing velocity at which the largest aspect ratio of columnar grains can be obtained at each HZT, as the HZT increases, the largest aspect ratio of columnar grain as well as the optimum withdrawing velocity increases. The mechanism of directional recrystallization can be described as selective growth and competitive migration of the grain boundaries. And the effect of skin effect on grain growth during directional recrystallization is also studied, a kind of gradient structure material was designed by using the skin effect.
||Planned: Supplemental Proceedings volume