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High temperature plastic deformation behavior of non-oriented electrical steel

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Abstract

High temperature plastic deformation behavior of non-orientated electrical steel was investigated by Gleeble 1500 thermo-mechanical simulator at strain rate of 0.01−10 s−1 and high temperature of 500–1 200 °C. The stress level factor (a), stress exponent (n), structural factor (A) and activation energy (Q) of high temperature plastic deformation process of non-orientated electrical steel in different temperature ranges were calculated by the Arrhenius model. The results show that, with dynamic elevation of deformation temperature, phase transformation from α-Fe to γ-Fe takes place simultaneously during plastic deformation, dynamic recovery and dynamic recrystallization process, leading to an irregular change of the steady flow stress. For high temperature plastic deformation between 500 and 800°C, the calculated values of a, n, A, and Q are 0.039 0 MPa−1, 7.93, 1.9×1018 s−1, and 334.8 kJ/mol, respectively, and for high temperature plastic deformation between 1 050 and 1 200 °C, the calculated values of a, n, A, and Q are 0.125 8 MPa−1, 5.29, 1.0×1028 s−1, and 769.9 kJ/mol, respectively.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Central South University, Changsha, 410083, China

    Yu-de Xiao  (肖于德), Min Li  (李 敏), Wei Wang  (王 伟) & Juan Zhou  (周 娟)

  2. Hunan Valin Lianyuan Iron and Steel Company, Lianyuan, 417722, China

    Guang-liang Wu  (吴光亮) & Yue-ming Peng  (彭跃明)

Authors
  1. Yu-de Xiao  (肖于德)
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  2. Min Li  (李 敏)
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  3. Wei Wang  (王 伟)
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  4. Juan Zhou  (周 娟)
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  5. Guang-liang Wu  (吴光亮)
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  6. Yue-ming Peng  (彭跃明)
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Corresponding author

Correspondence to Yu-de Xiao  (肖于德).

Additional information

Foundation item: Project(2005038560) supported by the Postdoctoral Foundation of China; Project(05GK1002-2) supported by Key Program of Hunan Province

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Xiao, Yd., Li, M., Wang, W. et al. High temperature plastic deformation behavior of non-oriented electrical steel. J. Cent. South Univ. Technol. 16, 25–31 (2009). https://doi.org/10.1007/s11771-009-0004-8

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  • DOI: https://doi.org/10.1007/s11771-009-0004-8

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