EFFECTS OF THE HEAT TREATMENT ON THE MECHANICAL PROPERTIES OF THE ALUMINIUM ALLOYS

Abstract

This paper aims to investigate the effects of the heat treatment on the mechanical properties in case of EN AW6060 aluminium alloy.Mechanical characteristics were measured in both the tensile test and the bending test. Although there is standard [1] that indicate the mechanical properties of the aluminium alloy used to manufacture different kinds of profiles, the main purpose of this paper consists in the accuracy comparing of the mechanical properties of the commercial aluminium alloy EN AW-6060 used to manufacture box profiles, that is in T4 state or T6 state depending on the heat treatment. Finally, it is shown that the maximum values max of both the tensile stress and flexural stress are greater with 41.47% and with 75.47% respectively, in case of EN AW 6060 – T6 aluminium alloy than the values recorded in case of EN AW 6060 – T4 aluminium alloy. There are small differences concerning the modulus of elasticity E recorded: 8.13% in case of Young’s modulus E determinate in tensile test; 5.34% in case of the modulus of elasticity determinate in the bending test.