TESTE DE RESISTÊNCIA A TRAÇÃO DE CHAPA DE AÇO ASTM A-36: ensaios com e sem tratamento térmico por alívio de tensão

Abstract

This work presents a comparison about the limit of tensile strength between welded sheets of carbon steel ASTM A-36 heat treated by stress relief, and sheets of the same material without heat treatment. In order to guarantee the veracity of the results, the practical method was used to analyze the tensile strength of the plates, the tensile test, which consists of subjecting the material to an axial tensile effort until rupture. Considering that it is a treated material and one that is not, the loads supported varied slightly from one another. thus obtaining a result where the specimen that the strain relief was carried out, supported a load slightly less than the untreated material. Strain relief is indicated even when parts of ASTM A-36 material are subjected to tensile stresses. The treatment is feasible, because in addition to rearranging the disagreements caused by welds or conformations, it also does not impair the material's resistance when subjected to traction efforts.