Modeling the austenite-ferrite transformation in microalloyed steel P510L

Wan-hua Yu1), Lü-ting Xu1), Guang-hong Feng2), Chun-jing Wu1), Cheng Zhou1), and Hui-feng Wang1) 1) School of Materials Science and Engineering, University of Science and Technology, Beijing 100083, China 2) Metallurgical Technology Institute, Central Iron and Steel Research Institute, Beijing 100081, China

摘 要：Based on experimental results, the transformation kinetics and cooling characteristics of low-carbon steel were analyzed and modeled to quantitatively link the operational parameters of a process with the properties. From the continuous cooling transformation results, comparisons of the start temperature of austenite-ferrite transformation among three models were analyzed, and the optimal lnk and n, which are the parameters in the Avrami equation, were determined by applying two regression models at different cooling rates. The transformation kinetics during continuous cooling was determined. Furthermore, reasonable agreements between experimental results and predictions were obtained, which can demonstrate the rationality of the established models.

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