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Effects of uniaxial stress on the magnetic properties of laser scribed grain oriented 3.2% Si steel

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Abstract

Effects of laser scribing on the magnetic properties of commercial grain-oriented 3.2% Si steels were investigated. Laser scribing was shown to play a significant role in reducing the core loss of tension-coated grainoriented (GO) Si steels. The reduction ratio of the core loss was dependent on the applied strees conditions and orientation of magnetic domains. Longitudinal tensile stress contributes to the increase of magnetic flux density. Laser scribing contributes to the redistribution of magnetic domains and creates 90° magnetic domains. GO Si steel is described by negative values of magnetostriction. Laser scribing results in magnetostriction positive values whereas application of tensile stress causes negative magnetostriction.

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Authors and Affiliations

  1. POSCO Technical Research Laboratories, Pohang, P. O. Box 36, 790-785, Gyeongbuk, Korea

    S. Y. Cha & J. K. Kim

  2. School of Materials Science and Engineering, Pusan National University, 30 Jangjeon-dong, Geumjeong-gu, 609-735, Pusan, Korea

    Y. R. Cho

Authors
  1. S. Y. Cha
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  2. J. K. Kim
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  3. Y. R. Cho
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Correspondence to S. Y. Cha.

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Cha, S.Y., Kim, J.K. & Cho, Y.R. Effects of uniaxial stress on the magnetic properties of laser scribed grain oriented 3.2% Si steel. Met. Mater. Int. 11, 49–51 (2005). https://doi.org/10.1007/BF03027483

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