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Journal of Iron and Steel Research International

, Volume 22, Issue 12, pp 1131–1137 | Cite as

Effects of Pulsed Current and Pulsed Magnetic Field Complex Pretreatment on Martensite Transformation of Cr5 Steel during Continuous Cooling

  • Qing-chun LiEmail author
  • Li-juan Li
  • Guo-wei Chang
  • Qi-jie Zhai
Material
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Abstract

Carbide precipitation and martensite transformation in Cr5 steel have been observed in situ by high-temperature confocal laser-scanning microscopy. In this way, the influences of pulsed current and pulsed magnetic field complex pretreatment on carbide precipitation and martensite transformation during continuous cooling have been studied. The results show that the electropulsing complex pretreatment promotes the precipitation of M7C3-type carbides at high temperature, increases the start and finish temperatures of martensite transformation, and extends the phase transformation time. Martensite prefers to nucleate in the austenite with less precipitation of carbides due to the chemically homogeneous distribution of solute atoms.

Key words

pulsed current pulsed magnetic field pretreatment martensite transformation 

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Copyright information

© China Iron and Steel Research Institute Group 2015

Authors and Affiliations

  • Qing-chun Li
    • 1
    Email author
  • Li-juan Li
    • 2
  • Guo-wei Chang
    • 1
  • Qi-jie Zhai
    • 2
  1. 1.School of Materials Science and EngineeringLiaoning University of TechnologyJinzhou, LiaoningChina
  2. 2.School of Materials Science and EngineeringShanghai UniversityShanghaiChina

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