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Bainite transformation time model optimization for Austempered Ductile Iron with the use of heuristic algorithms

Olejarczyk-Wożeńska Izabela, Opaliński Andrzej, Mrzygłód Barbara, Regulski Krzysztof, Kurowski Wojciech

Computer Methods in Materials Science

2022

Vol. 22, No. 3

125--136

The paper presents the application of heuristic optimization methods in identifying the parameters of a model for bainite transformation time in ADI (Austempered Ductile Iron). Two algorithms were selected for parameter optimization – Particle Swarm Optimization and Evolutionary Optimization Algorithm. The assumption of the optimization process was to obtain the smallest normalized mean square error (objective function) between the time calculated on the basis of the identified parameters and the time derived from the experiment. As part of the research, an analysis was also made in terms of the effectiveness of selected methods, and the best optimization strategies for the problem to be solved were selected on their basis.