4.5 Article

Microstructure and Texture of Strip Cast Grain-Oriented Silicon Steel after Symmetrical and Asymmetrical Hot Rolling

期刊

STEEL RESEARCH INTERNATIONAL
卷 85, 期 10, 页码 1477-1482

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/srin.201300385

关键词

strip casting; grain-oriented silicon steel; asymmetric hot rolling; microstructure; texture

资金

  1. National Natural Science Foundation of China [50734001, 51004035, 51174059, 51374002]
  2. Fundamental Research Funds for the Central Universities [N120407009]

向作者/读者索取更多资源

A grain-oriented silicon steel as-cast strip was produced by twin-roll strip casting. Then the as-cast strip was symmetrically and asymmetrically hot rolled, respectively. The microstructure and texture evolution was investigated by a combination of optical microscopy, X-ray diffraction, and electron backscattered diffraction methods. The microstructure of the as-cast strip consisted of ferrite matrix and martensite, and the texture was characterized by pronounced {001} < 0vw > fiber texture in the outer layers and nearly random texture in the inner layers. After symmetric hot rolling, the microstructure was composed of deformed ferrite grains, proeutectoid ferrite grains and pearlite. The texture was characterized by pronounced {001} < 0vw > fiber texture in the outer layers and mild gamma-fiber texture in the inner layers. By contrast, when asymmetric hot rolling was applied, considerably dispersive proeutectoid ferrite and pearlite and relatively strong Goss texture were observed, together with strong {001} < 0vw > fiber texture in the outer layers.

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