A Model for the Martensite Transformation Kinetics in Low Alloy Heat Treatable Steel
A new empirical model for martensite transformation kinetics in low alloy heat treatable steels is proposed based on an exponential function.The proposed model was derived to avoid the limitations of the Koistinen and Marburger model by considering the influence of alloying elements.The value of the exponent in the proposed model improves the accuracy of the transformation rate at the early stage of transformation.This leads to a better prediction of the martensite volume fraction compared to previous models.The accuracy of the volume fractions predicted by the proposed model was verified for a variety of experimental data,in particular published values of M90 temperatures and the volume fraction of retained austenite for different carbon levels.The proposed model was used for quenching distortion simulations,and resulted in more accurate predictions.
kinetics model martensitic transformation alloying effect plain carbon steels low alloy steels
LEE Seok-Jae VAN TYNE Chester J DE COOMAN Bruno C
Graduate Institute of Ferrous Technology,Pohang University of Science and Technology,Pohang 790-784, Advanced Steel Processing and Products Research Center,Department of Metallurgical and Materials Eng
国际会议
Asia Steel International conference 2012(第五届亚洲钢铁大会)
北京
英文
1-4
2012-09-23（万方平台首次上网日期，不代表论文的发表时间）