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Materials 2018, 11(8), 1327; https://doi.org/10.3390/ma11081327

Effects of Processing Conditions on Texture and Microstructure Evolution in Extra-Low Carbon Steel during Multi-Pass Asymmetric Rolling

1
Laboratory of Excellence on Design of Alloy Metals for Low-Mass Structure (Labex-DAMAS), Université de Lorraine, 57070 Metz, France
2
Université de Lorraine, CNRS, Arts et Métiers ParisTech, LEM3, F-57000 Metz, France
3
Institute for Frontier Materials (IFM), Deakin University, Geelong 3216, Australia
4
Department of Metallurgy & Materials Engineering, Indian Institute of Engineering Science and Technology, Shibpur-711103, India
5
Tata Steel Ltd., Jamshedpur-831001, India
*
Authors to whom correspondence should be addressed.
Received: 22 June 2018 / Revised: 17 July 2018 / Accepted: 25 July 2018 / Published: 31 July 2018
(This article belongs to the Special Issue Design of Alloy Metals for Low-Mass Structures)
Full-Text   |   PDF [13638 KB, uploaded 31 July 2018]   |  

Abstract

Multi-pass rolling was carried out on extra-low carbon steel at room temperature by imposing different ratios of asymmetry in the roll-diameters as well as by conventional mode. The aim of this study is to understand the effect of shear deformation due to the asymmetric conditions on the development of the rolling texture and the possibilities of propagating the shear deformation into the mid-thickness area of the sheet. The trends of the measured texture developments in both symmetric and asymmetric rolling indicate their dependence primarily on the stability and fraction of the Goss {110}<001> and the rotated cube {001}<111> orientations. The effects of asymmetry conditions were further examined on the microstructure evolution and were correlated to the increased orientation inhomogeneity and grain fragmentation. Both texture and microstructure development showed their dependence on the applied thickness reduction per pass, on the total thickness reduction of the sheet as well as on the degree of the imposed asymmetry. It was found that shear textures can be obtained by asymmetric rolling at conditions where all three parameters—asymmetry ratio, strain in one pass, and the total accumulated strain—are as large as possible. View Full-Text
Keywords: rolling; asymmetric ratio; texture; thickness reduction per pass; grain refinement; steel rolling; asymmetric ratio; texture; thickness reduction per pass; grain refinement; steel
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Dhinwal, S.S.; Toth, L.S.; Hodgson, P.D.; Haldar, A. Effects of Processing Conditions on Texture and Microstructure Evolution in Extra-Low Carbon Steel during Multi-Pass Asymmetric Rolling. Materials 2018, 11, 1327.

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