Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
THERMAL AND MICROSTRUCTURAL ANALYSIS OF QUENCHING PROCESS IN AN CYLINDRICAL BAR OF AISI 1045 STEEL USING THE CLASSICAL INTEGRAL TRANSFORM TECHNIQUE
Submission Author:
Ítalo Amaral , RJ , Brazil
Co-Authors:
Ítalo Amaral, Mateus Oliveira de Aguiar, Raul Queiroz, Joanes Dias, Diego Knupp, José Luiz Zanon Zotin, Marcos Curi
Presenter: Raul Queiroz
doi://10.26678/ABCM.COBEM2019.COB2019-1182
Abstract
Given the importance of the steel market in Brazil and its impacts on the local economy, the simulation of a steel quenching process and stipulation of its microstructures becomes relevant. Thus, it was considered a long cylinder of a specified radius R and length L, where L>>R, made of AISI 1045 steel. To determine the temperature distribution in this cylinder in any point and time instant, it was necessary to solve the heat diffusion equation in cylindrical coordinates. The mathematical method used to solve this problem is the Classical Integral Transformation Technique (CITT), which provides an analytical solution to the transient diffusive problem that represents the cooling process. The results were also compared with numerical data obtained for the same problem from simulations with software ANSYS®, widely used in engineering. Thus, the microstructure profiles were obtained and analyzed through the Continuous Cooling Transformation diagram (CCT). The material will be subjected to a temperature of 860ºC and cooled to 25ºC, using several parameters of cooling. Therefore, the predominant microstructure of the specimen could be stipulated.
Keywords
CITT, CCT, Microstructure, cooling
