Establecer la influencia del tratamiento térmico de temple realizado a temperaturas intercríticas y revenido en resistencia a la corrosión en un acero AISI/SAE 1045

Abstract

Carbon steels today are of great importance for industry in general, since from this material we can make a lot of parts and elements that we see in the world all the days. So AISI / SAE 1045 has a myriad uses for its low cost, good strength and hardness, among the most important components are the manufacture of machinery and tools. But like most metals, life can be reached affected by corrosion. Therefore, this project was developed in order to understand and analyze their behavior against corrosion. Accelerated corrosion tests (using ASTM standard B.117) and visual inspections are the first procedures performed during the course of the investigation of the AISI / SAE 1045 steel heat treated by quenching from intercritical temperature by cooling water, and further tempering being cooled by the same means. 30 samples were analyzed with different temperatures of quenching and tempering times, to which underwent an identification of the metallographic microstructure and hardness testing; subsequently these samples were subjected to aggressive environmental conditions through a mist chamber for the duration of 50, 100 and 200 hours, thus the data obtained gravimetric corrosion analysis was performed in order to determine the percentage mass loss due to corrosion. Subsequently it made using a scanning electron microscope (SEM) with which corrosion and spread on steel was visually identified.