Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Hot deformation simulation of modified AISI 5120 low alloy steel
Submission Author:
Diego Boschetti , SP
Co-Authors:
Diego Boschetti, Ana Paola Braga, Paula Fernanda da Silva Farina
Presenter: Diego Boschetti
doi://10.26678/ABCM.COBEM2017.COB17-2171
Abstract
The studies in the hot deformation for low alloy steels have been a scenario of many decades, but with many empirical results. Currently, to realize a preliminary view of the behavior in certain material submitted to efforts and work parameters by numerical simulation is indispensable. In addition, the industry needs to get a safe panorama for the hot working of metal alloys. Thus, this paper is a study of numerical simulation to predict the hot deformation behavior and data to generate processing map of a Mo-Si modified AISI 5120 steel. Initially a comparison was made between the original and modified steel in which a similarity in the hot deformation behavior was verified, both qualitative and quantitative. The study checked temperatures range (900 - 1200 ° C) and strain rates (1.0, 5.0, 10.0, 50.0 and 100.0 s-1), in which there is the softening phenomenon in material, with probability of dynamic recrystallization (DRX). With data obtained from the numerical simulation, it was possible to determine the strain rate sensitivity (m), which is the initial parameter for the construction of processing map. The values of m found were accepted for the determination of energy dissipation efficiency and instability (0 ≤ m ≤ 1). Thus, the hot deformation behavior is stable and agrees to the construction of the processing map with laboratorial study.
Keywords
Simulation, Hot deformation, compression, steel, processing map
