Columnar grain growth in non-oriented electrical steels via plastic deformation of an initial columnar-grained solidification microstructure
Columnar grain growth in non-oriented electrical steels via plastic deformation of an initial columnar-grained solidification microstructure
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DOI：
10.1016/j.matlet.2019.126797
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Chunfa Yao
中科院分区：
文献类型：
--
作者：
Li Xie;Mingtao He;Luyan Sun;Jiangtao Wang;Yalin Lu;Chunfa Yao
The growth behavior of columnar grains in non-oriented electrical steels is studied via the plastic deformation of an initial columnar-grained solidification microstructure and annealing, based on changes in grain orientation and grain orientation spread (GOS) value. The proportion of high-strain grains increased with increasing plastic deformation. Moreover, slender {1 0 0}-textured columnar grains with low GOS values are obtained from the anisotropy of the strain energy induced by the temperature gradient. Besides, relatively coarse {1 0 0}- and {1 1 0}-textured columnar grains are obtained with a higher GOS value, resulting mainly from the migration of grain boundaries along the rolling plane induced by the anisotropy of the surface energy. The development of columnar-grained microstructures is an efficient method for improving the magnetic behavior of the final product.
