Evaluation of Empirical Kinetics Models of Athermal Martensite Transformation in Plain Carbon and Low Alloy Steels

Seok Jae Lee

doi:10.4028/www.scientific.net/AMR.798-799.39

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Evaluation of Empirical Kinetics Models of Athermal Martensite Transformation in Plain Carbon and Low Alloy Steels
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Evaluation of Empirical Kinetics Models of Athermal Martensite Transformation in Plain Carbon and Low Alloy Steels

Abstract:

In this paper, the empirical kinetics models for athermal martensite transformation in plain carbon and low alloy steels were reviewed. Four models based on an exponential function were selected and evaluated by comparing with the published values of M₅₀ and M₉₀ temperatures. It was confirmed that the model proposed by Lee and Van Tyne resulted in more accurate predictions of athermal martensite transformation kinetics by considering the composition dependent parameters and the exponent term to express a sigmoidal shaped curve.