Resumen

The aim of this grade work is to show the tribological behaviour of AISI-SAE 1045 steel subjected to wear test under ASTM G-99 standard, using different variables for testing among them: contact load, roughness and hardness. Within the tests to know the mechanical behaviour, the indentation test stands out, with which it is possible to identify specific properties in a material. However, for the evaluation of the wear behavior present in the study steel, it is necessary to consider the application of normal loads to the surface of the body under study, thus achieving to reproduce the contact and relative movement of the bodies. In order to study the behavior of AISI 1045 steel in commercial state and change of hardness obtained through thermal treatment, it was necessary to use a pin on disk sliding wear machine (ASTM G-99). The experimental work is carried out with a tribological pair of steel AISI-SAE 1045. This pair was machined, and polished with sandpapers by means of a rotary polisher until obtaining a surface with a roughness of 0,15; 0,48; 0,7μm. The loads used in the experimental tests are: 10N; 15N; 20N respectively; The tests are carried out with a sliding distance of 1000 m according to the ASTM G-99 standard. The behavior of the coefficient of friction with respect to the time and the sliding distance was studied, as well as the loss of mass in each one of the pins; the obtained data are compared with what is found in the literature, which are within the range of the studies of coefficient of friction between steel and steel reported by the literature.