Influence of structural and textural states of low-carbon steels on the cracking resistance of tube products

Abstract

The texture of low-carbon low-alloy pipe steel sheet with bainitic structure produced by thermomechanical controlled processing (TMCP) is studied by means of electron backscatter diffraction (EBSD). The formation of cleavages during steel failure is related to the presence of ferrite grains with orientation {001} extended in the hot rolling direction. Two possibilities are shown for the formation of regions of easy crack propagation along the product obtained by TMCP. © 2020 American Institute of Physics Inc. All rights reserved. ; The work was carried out using the equipment of the Laboratory of Structural Methods of Analysis and Properties of Materials and Nanomaterials of the Center of the Ural Federal University. The reported study was funded by the RFBR under research project No. 18-33-00135. We are grateful for the assistance rendered under the Program of Supporting the Leading Universities in the Russian Federation Aimed at Enhancing Their Competitiveness, government order No. 211, contract No. 02.A03.21.0006.