Microstructural and textural characterization of a hot-rolled IF steel |
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Authors: | Jefferson Fabrício Cardoso Lins Hugo Ricardo Z. Sandim Hans-Jürgen Kestenbach |
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Affiliation: | 1.Escola de Engenharia Industrial Metalúrgica de Volta Redonda,Universidade Federal Fluminense,Volta Redonda,Brazil;2.Escola de Engenharia de Lorena,Universidade de S?o Paulo,Lorena,Brazil;3.Universidade Federal de S?o Carlos,Sao Carlos,Brazil |
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Abstract: | The present paper reports the experimental results on the microstructural and textural characterization of a hot-rolled IF steel. The IF steel was hot-rolled in multiple passes in the austenitic field (1,070 °C) followed by air-cooling. SEM, TEM, and LOM were used to image the microstructure of the material. The global texture was determined by X-ray diffraction (XRD) technique. The mesotexture of selected regions was investigated by electron backscatter diffraction (EBSD). Results show the presence of a diffuse (nearly random) and weak texture in the hot-band that consists of recrystallized polygonal grains and subgrains. The fraction of boundaries with misorientations comprised in the interval 2° ≤ ψ < 15° was found to be lower than 5%. It can be concluded that these low angle boundaries and the presence of subgrains can be associated to the existence of a few areas softened by recovery during or after hot rolling in austenitic field. |
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