Estudo comparativo da temperabilidade entre os aços AISI: 1045, 4340, H13 e D6

Abstract

The tempering and tempering heat treatments are extremely important in the industries as essential tools in obtaining better mechanical properties of the metals in their respective applications. However, the metallurgical industries have in their activities one of the highest levels of carbon emissions in addition to all the damage that is inherent to the sector. Thus, it is necessary to seek solutions that mitigate and compensate for these polluting activities. The present work aims to propose a single processing to all the steels present in the study, so that such procedures are carried out in a unique way, thus avoiding repetition and reheating of the oven, which consequently brings energy gains. In this way, the work presents a comparison of four of the most used steels in the commercial environment, subjecting these steels to the same conditions of tempering and tempering heat treatment, in which their mechanical properties are evaluated through the hardness and resonance frequency tests and also your micrographs through optical microscopy analysis. The results showed a better effective gain in mechanical properties of the alloys AISI H13 and AISI D6 when compared to alloys AISI 1045 and AISI 4340. However, the values still showed a little below those suggested by the manufacturers.