Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Effects of the solid carburizing with babassu coconut (Orbignya phalerata) on the microstructure and mechanical properties on low carbon steels
Submission Author:
Denilson Monteiro , SP
Co-Authors:
Denilson Monteiro, Sóstenes Pinheiro Campos, Rodrigo da Silva Miranda, Paulo Roberto Campos Flexa Ribeiro Filho, Adilto Cunha
Presenter: Adilto Cunha
doi://10.26678/ABCM.COBEM2023.COB2023-0716
Abstract
The present study aims to evaluate the effects of solid carburizing using babassu coconut (Orbignya phalerata) charcoal on the microstructure and mechanical properties of ASTM A36 steel. Circular samples with a diameter of 12 mm were employed and subjected to carburizing treatments with babassu coconut charcoal at 900°C for 1, 3, 5, and 7 hours, followed by water quenching. Additionally, a commercial carburizing granulate, Duro Carbon 310, was used for comparison. Hardness tests revealed an increase in surface hardness after the treatment, with samples carburized for seven hours displaying a 46.6% increase for coconut charcoal and a 52.3% increase for the granulate in comparison to the as-quenched material. Material analysis showed the evolution of the carburized layer with treatment time, reaching a maximum thickness of 1.36 ± 0.04 mm for the coconut charcoal treatment and 1.56 ± 0.04 mm for the granulate treatment after seven hours. Microstructural analysis indicated the presence of microconstituents such as ferrite, pearlite, bainite, and martensite in the core, while in the carburized layer, a predominantly martensitic structure with bainite nucleation was observed in some regions.
Keywords
Carburizing, Babassu Coconut, Martensite, thermochemical treatment, ASTM A36 Steel
