Influencia del tratamiento térmico de temple con austenización parcial, criogenia y revenido sobre la resistencia a la tensión y la dureza de un acero con contenido de carbono superior al 0,5%

Abstract

A series of heat treatments was carried out on steel specimens with carbon content upper than 0,5% in order to establish the influence of the cryogenic treatment with subsequent tempering below the martensitic transformation start temperature at different holding times on the tensile strength and hardness of the material, previously quenched at inter-critical temperatures. Tension tests, hardness, optical microscopy and scanning electron microscopy (SEM) were performed. The variations of the results between the treatment groups and with respect to control specimens with the untreated material were analyzed.