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Volume 12 Issue 1
Feb.  2021
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ZHAO Haibin, QIN Jing, LIU Defu, ZHANG Yinghui, WANG Zhigang. Effect of rare earth Yttrium on the tensile properties of 6.5%Si steel[J]. Nonferrous Metals Science and Engineering, 2021, 12(1): 131-140. DOI: 10.13264/j.cnki.ysjskx.2021.01.017
Citation: ZHAO Haibin, QIN Jing, LIU Defu, ZHANG Yinghui, WANG Zhigang. Effect of rare earth Yttrium on the tensile properties of 6.5%Si steel[J]. Nonferrous Metals Science and Engineering, 2021, 12(1): 131-140. DOI: 10.13264/j.cnki.ysjskx.2021.01.017
shu

Effect of rare earth Yttrium on the tensile properties of 6.5%Si steel

  • Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China

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  • Received Date: September 10, 2020
  • Published Date: February 27, 2021
    Graphical Abstract
    • Abstract
  • Fe-6.5wt%Si alloy shows potential for a broad application with excellent soft magnetic properties including high permeability, low iron loss, and near-zero magnetostriction. However, brittle-ordered B2 and DO3 structures hinders its mass production and applications. In this work, the effect of Y element on the tensile properties of Fe-6.5wt%Si alloy at 200~800 ℃ was investigated. A detailed study of the Y element in the microstructure and ordered structure of Fe-6.5wt%Si was carried out by EBSD, EPMA, XRD and TEM. Results showed that Y2O3 and Y2O2S precipitates as the efficient nucleation agents refined the microstructures. Adding Y not only refined the ordered domains, but also reduced the ordered phase contents, ordered degrees, and hardness. The fracture elongation of high silicon steel with 0.03% Y at 200~600 ℃ was higher than that of high silicon steel without Y. The tensile strength of high silicon steel containing 0.03% Y was higher than that of high silicon steel without Y at 200~400 ℃. The grain refinement and ordered degree reduction caused by the addition of rare earth Y in Fe-6.5wt%Si alloy were the important reasons for its improvement in ductility.
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    • References (34)
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