The method of orientation microscopy (EBSD) is used to study the texture of low-carbon, low-alloy pipe steel sheets with a bainitic structure made by controlled thermomechanical processing. The specimens analyzed are inclined or not inclined towards forming separations (secondary cracks) in a fracture during mechanical testing. Formation of separations during failure of steel with a bainitic structure is connected with the presence in the material of regions with uniform orientation (001)<110> extended in the cold rolling direction. Formation of the regions is a consequence of features of γ→α shear transformation that commences at special boundaries between deformed austenite grains.
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Translated from Metallurg, No. 4, pp. 57–63, April, 2016.
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Pyshmintsev, I.Y., Struin, A.O., Gervasyev, A.M. et al. Effect of Bainite Crystallographic Texture on Failure of Pipe Steel Sheets Made by Controlled Thermomechanical Treatment. Metallurgist 60, 405–412 (2016). https://doi.org/10.1007/s11015-016-0306-7
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DOI: https://doi.org/10.1007/s11015-016-0306-7