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Phase Transformation Behavior of Niobium Containing Microalloyed Steel with Predeformation and Continuous Cooling

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Abstract:

The continuous cooling phase transformation behavior of niobium microalloyed steel was studied by Thermecmastor-Z thermomechanical simulator; the continuous cooling transformation curves (CCT) were established. The change of microstructure under different cooling rates was observed, and the influence of deformation in austenite non-recrystallization region on transformation was discussed. Based on these work, it was possible to know that the phase transformation is retarded and the ferritic grain is refined dramatically as the cooling rate increasing. The deformation in austenite non-recrystallization region caused deformation stored-energy, which improved the grain refinement of transformation to some extent, but not significant.

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Periodical:

Materials Science Forum (Volume 804)

Pages:

281-284

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.804.281

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Online since:

October 2014

Authors:

Yuan She*, Zhao Hui Zhang, Jian Tao Ju, Bo Jin

Keywords:

Continuous Cooling, Niobium Microalloyed Steel, Phase Transformation, Predeformation

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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