Journal
MATERIALS CHARACTERIZATION
Volume 163, Issue -, Pages -Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.matchar.2020.110310
Keywords
Twin-roll strip casting; Non-oriented electrical steel; Texture; Recrystallization; Nucleation; Microstructure
Categories
Funding
- National Natural Science Foundation of China [51701021]
- National Key Research and Development Program of China [2016YFB 0300303]
- Science and Technology Development Plan of Jilin Province of China [20190103032JH]
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An excellent 4.5 wt%Si non-oriented electrical steel was fabricated by warm rolling and isothermal annealing of twin-roll cast strip. The detailed evolution of microstructure and texture was studied using the combination of electron back-scattering diffraction (EBSD), X-ray diffraction (XRD) and transmission electron microscope (TEM) for revealing the recrystallization behavior. The favorable {100}< 013 > nuclei originate in the shear bands within deformed {111}01-2 > and {110}0-10 > grains. Based on the EBSD analysis, oriented nucleation is the predominant mechanism for the formation of strong {100}< 013 > texture. The rearrangement of dislocations and cell transformation to sub-grains were characterized. The mechanisms of (sub-)grain coalescence, as well as strain induced grain boundary migration, take effect simultaneously, during the nucleation.
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