Influencia Del Tratamiento Térmico En La Fractura De Una Fundición De Hierro Multialeada
Résumé: Multicomponent white cast irons contain many kinds of strong carbide forming elements in order to obtain a very hard microstructure, characterized by the presence of different carbides, well dispersed in a martensitic matrix. The heat treatment of these products consists in high temperature austenization followed by a quenching and two temperings, as it is required with the aim of increasing their overall hardness and to completely eliminate residual austenite. The influence of tempering temperature on the mechanical properties of these products, which were determined using tensile, hot compression and fracture toughness tests, was studied in this research work. Their corresponding failure micromechanisms were defined by means of the analysis of fracture surfaces.
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