4.5 Article

Microstructure and texture evolution of ultra-thin grain-oriented silicon steel sheet fabricated using strip casting and three-stage cold rolling method

期刊

出版社

ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2016.11.038

关键词

Strip casting; Ultra-thin grain-oriented silicon steel; Microstructure; Goss texture; Inhibitor; Secondary recrystallization

资金

  1. National Natural Science Foundation of China [50734001, 51004035, 51374002, 51574078]
  2. National Key Technology R D Program [2012BAE03B00]
  3. National High Technology R & D 863 Program [2012AA03A506]
  4. Fundamental Research Funds for the Central Universities [N140705001, N130607003]
  5. China Postdoctoral Science Foundation [2014M560218, 2016T90228]

向作者/读者索取更多资源

A 0.1 mm-thick grain-oriented silicon steel sheet was successfully produced using strip casting and three-stage cold rolling method. The microstructure, texture and inhibitor evolution during the processing was briefly analyzed. It was found that Goss texture was absent in the hot rolled sheet because of the lack of shear deformation. After normalizing, a large number of dispersed MnS precipitates with the size range of 15-90 nm were produced. During first cold rolling, dense shear bands were generated in the deformed ferrite grains, resulting in the intense Goss texture after first intermediate annealing. The microstructure was further refined and homogenized during the subsequent cold rolling and annealing processes. After primary recrystallization annealing, a homogeneous microstructure consisting of fine and equiaxed grains was produced while the associated texture was characterized by a strong.-fiber texture. Finally, a complete secondary recrystallization microstructure consisting of entirely large Goss grains was produced. The magnetic induction B-8 and iron loss P-10/400 was 1.79 T and 6.9 W/kg, respectively.

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