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Thermodynamic and Kinetic Calculation of Non-Equilibrium Microstructure Design of TRIP Steel

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Abstract:

The non-equilibrium microstructure of Fe-C-Mn-Si TRIP steel is designed bythermodynamic and kinetic calculation. The upper limit of bainitic transformation temperature iscalculated and compared to that characterized by CCT curve determination. s M temperature isdetermined based on thermodynamics of martensitic transformation and sublattice model. Thecalculation is conducted via TQ6-patch in Thermo-Calc software. Comparison between thecalculations and experiments reveals the relationship between non-equilibrium phase compositionand heat treatment parameters which can be utilized to achieve the elaborate design of alloy and heattreatment for super TRIP steel.

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Periodical:

Materials Science Forum (Volumes 783-786)

Pages:

766-770

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.783-786.766

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Online since:

May 2014

Authors:

Yan Lin He*, Na Qiong Zhu, Wei Sen Zheng, Xiao Gang Lu, Lin Li

Keywords:

Bainitic Transformation, Kinetic, Martensitic Transformation (MT), Thermodynamic, TRIP Steel

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

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