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.
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Foundation Item: Item Sponsored by National Natural Science Foundation of China (51204092); Open Project of Shanghai Key Laboratory of Modern Metallurgy and Materials Processing of China (SELF-2012-02)
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Li, Qc., Li, Lj., Chang, Gw. et al. Effects of Pulsed Current and Pulsed Magnetic Field Complex Pretreatment on Martensite Transformation of Cr5 Steel during Continuous Cooling. J. Iron Steel Res. Int. 22, 1131–1137 (2015). https://doi.org/10.1016/S1006-706X(15)30123-0
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DOI: https://doi.org/10.1016/S1006-706X(15)30123-0