Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
ANALYSIS OF HEAT TREATMENTS AND MECHANICAL STRENGTH IN A HSLA STEEL
Submission Author:
João Pedro Campos Batista , MG , Brazil
Co-Authors:
João Pedro Campos Batista
Presenter: João Pedro Campos Batista
doi://10.26678/ABCM.COBEM2021.COB2021-1462
Abstract
The present study was carried out on the analysis of the behavior of a steel alloyed to Niobium ASTM A572 after being subjected to normalization and tempering heat treatments, in this sense the general objective of this work sought to validate the performance of the steel in mechanical resistance tests and analyzes microstructural, the manipulation of the variables found by the laboratory tests were treated in a quantitative and qualitative way with theoretical basis, the behavior of the steel under treatment was positive, surpassing in all aspects the steel under normal conditions having the microscopically proven with the material structure , thus listing the importance of this study as a basis for future research. For the tensile test, there was an increase of 5.56% of the normal steel for the tempered and tempered, and an increase of 13.16% for the yield limit, the hardness was greater, however it remained in balance, already for energy of impact there was an increase of 93.54% for tempered and tempered steel, the predominant microstructures in the specimens were a combination of tempered martensite with cementite and ferrite for tempering tempering and fine perlite with ferrite for normalization, thus justifying the results obtained in the tests.
Keywords
niobium steel, Thermal treatments, mechanical resistance
