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Analysis of {100} Texture Formation in Vacuum Annealed Electrical Steel Based on Elastic Anisotropy and Surface Energy Anisotropy
Author(s) -
Wang Jinhua,
Yang Ping,
Mao Weimin
Publication year - 2019
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201800320
Subject(s) - materials science , annealing (glass) , recrystallization (geology) , nucleation , anisotropy , surface energy , microstructure , strain energy , crystallography , metallurgy , composite material , thermodynamics , optics , chemistry , finite element method , paleontology , physics , biology
In the present work, columnar grains with strong {100}<0vw> texture in the surface layer are obtained by controlling cold rolling reduction and vacuum annealing with α → γ → α transformation in a Fe–3%Si steel sheet containing Mn and C. The formation of the {100}<0vw> texture during vacuum annealing is related to cold rolling reduction. The {100}<0uv> seeds are retained during a low cold rolling reduction and recrystallization process. The annealed {100}<001> and {100}<012> originate mainly from the nucleation of recrystallization in deformed microstructures. The {100}<011> texture, that is, formed during vacuum annealing originates from the deformed {100}<011>. The development of sharp {100} texture is caused by α → γ → α transformation during vacuum annealing. In the process of γ to α transformation, the values of elastic strain energy for α grains with different orientations on the surface are estimated. By combining the surface energies of various crystallographic planes, it is reasonable to conclude that the elastic strain energy anisotropy plays a significant role in the formation of a sharp {100}<0vw> texture during γ → α transformation. The {100}<0vw> grains prefer to grow in the surface layer columnar grains by minimizing elastic strain energy during γ → α transformation.