Obtençao da curva de endurecibilidade e da microestrutura do aço AISI H13 tratado via ensaio Jominy

Abstract

The H13 steel is largely used in hot plastic conformation works. Understand your comportament, such as your process until its use is essential. In order to obtain its properties, performed heat treatments must be analyzed, such as the hardness in the surface and in inside of the material, which is different that it is on the surface. The Jominy test, which was executed on the H13 steel, obtain hardness according to the distance of the treated surface, with the purpose of notice this hardness without using destructive tests, following ASTM A255 standart. Therefore, in order to get better analysis, it is necessary to know the microstructure in the material. To do that, metallography was mad in the material. It was concluded that the Jominy test, however the distant from the treated surface, does not affect the hardness and the microstructure, which maitain its proprieties in all the sample extension, wich is a martensitic structure with hardness proximally to 55 HRC.