Abstract
In this work, the effect of microstructural banding on the mechanical anisotropy of low carbon steel was evaluated. The studied steels contain different proportions of ferrite and perlite, as well as different banding degrees and microstructural orientations. The Charpy impact energy and tensile strength were evaluated on specimens oriented at 0° (L), 45° and 90° (C), respect to the rolling direction (RD); while the microstructural banding degree was determined in planes parallel to the fracture surface generated during the mechanical tests. The results allow to establish a quantitative ratio of the mechanical properties anisotropy to the banding degree, expressed as the coefficient of relative variation (rrv). Amongst directions in the same material, the RD (L) showed the greatest banding degree and the lowest the fracture toughness (KIC–CV) and tensile strength properties; while assessing the steels, the most banded steel showed the lowest KIC.
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Acknowledgements
The authors would like to acknowledge the National Polytechnic Institute (IPN), the National Council of Science and Technology (CONACYT) and the Analysis Integrity of Pipelines Group (GAID-IPN) for the support to carry out this research.
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Beltrán, M., González, J.L., Rivas, D.I., Hernández, F., Dorantes, H. (2018). The Effect of Pearlite Banding on the Mechanical Anisotropy of Low Carbon Steel. In: Ambriz, R., Jaramillo, D., Plascencia, G., Nait Abdelaziz, M. (eds) Proceedings of the 17th International Conference on New Trends in Fatigue and Fracture. NT2F 2017. Springer, Cham. https://doi.org/10.1007/978-3-319-70365-7_7
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