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Magnetic properties characterization of shear-textured 4 wt% Si electrical steel sheet

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Abstract

Simple shear deformation via hybrid cutting-extrusion is used to produce continuous electrical steel sheet from a commercial high-silicon (nominal 4 wt%) iron alloy of poor workability in a single deformation step, a fundamentally different route from the multi-step processing of rolling and annealing currently in use. The shear texture created in the sheet is found to be quite different from that produced by rolling. The magnetic properties of the shear-textured Fe–Si sheet are measured using closed-circuit permeametry and compared with those from sheet produced by rolling of the same alloy and a commercial non-grain-oriented sheet of similar composition. Properties compared include maximum relative permeability, induction, coercivity, and hysteresis loss. The results are interpreted in terms of microstructure, texture, and composition. A unit cell representation of the shear texture components is introduced that relates the expected orientation of easy magnetization directions with the sheet axes.

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ACKNOWLEDGMENTS

This work was supported in part by NSF CMMI 1562470 and DMR 1610094, U.S. Army Research Office Award W911NF-15-1-0591 and a Purdue University Bilsland Fellowship (to AK). The authors are grateful to Reinhold M.W. Strnat of Magnet-Physics Inc. for the magnetic properties characterization.

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Authors and Affiliations

  1. School of Materials Engineering, Purdue University, West Lafayette, IN, USA

    Andrew B. Kustas & Kevin P. Trumble

  2. Center for Materials Processing and Tribology, Purdue University, West Lafayette, IN, 47907, USA

    Andrew B. Kustas, Srinivasan Chandrasekar & Kevin P. Trumble

  3. School of Industrial Engineering, Purdue University, West Lafayette, IN, USA

    Srinivasan Chandrasekar

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  1. Andrew B. Kustas
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  2. Srinivasan Chandrasekar
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  3. Kevin P. Trumble
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Correspondence to Kevin P. Trumble.

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Kustas, A.B., Chandrasekar, S. & Trumble, K.P. Magnetic properties characterization of shear-textured 4 wt% Si electrical steel sheet. Journal of Materials Research 31, 3930–3938 (2016). https://doi.org/10.1557/jmr.2016.458

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