Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
INTEGRATION OF FEM TO DETERMINE THE MICROSTRUCTURE AND FORMABILITY OF A CONTINUOUS COOLING BAINITIC STEEL
Submission Author:
Thiago Ivaniski , RS
Co-Authors:
Alexandre da Silva Rocha
Presenter: Thiago Ivaniski
doi://10.26678/ABCM.COBEM2023.COB2023-2428
Abstract
The ongoing research endeavors are focused on advancing Continuous Cooling Bainitic Steels with the primary objective of mitigating manufacturing complexities and minimizing energy consumption within the forging industry. Nonetheless, a significant gap persists in the comprehension pertaining to their practical utilization. The control of stress state, plastic deformation, strain rate, and temperature directly impacts the workability of forged products. One approach that aims to enhance the understanding of the final mechanical properties of the forging is through the determination of dislocation densities during thermomechanical processing. The finite element simulation, once calibrated, allows observing these variations during hot forging. Therefore, this work aimed to determine dislocation density in austenite field of a wedge-shaped part during the forging step through the numerical simulation and compare it with the final dislocation density after the continuous cooling program. The findings indicate that, as the degree of plastic deformation in the austenite field increases, the dislocation density increases subsequent to the continuously cooled bainitic transformation, which is in direct correlation with the evolution of the microstructure during dynamic recrystallization and austenite grain refining.
Keywords
hot forging, Formability, Numerical simulation, Microstructure, Dislocation density
