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Ingeniería Mecánica

versión On-line ISSN 1815-5944


ORDONEZ-HERNANDEZ, Urbano et al. Characterization of borides coating formed during austenitization of an austempered ductile iron. Ingeniería Mecánica [online]. 2015, vol.18, n.1, pp. 71-79. ISSN 1815-5944.

The effect of simultaneous austenitization and boriding at 950 ºC, on microstructure, Vickers hardness and boronized layer thickness of a non alloyed austempered ductile iron has been investigated. It was demonstrated that it is possible to obtain a well formed boronized layer with a Vicker hardness sufficiently high (1400 HV), and with an appropriated 67μm layer thickness, on a typical ausferrite ADI substrate. By using a modified pin on disc test, it was demonstrated the higher abrasion wear resistance of borides layer deposited during ADI austenitization process, compared with Vickers hardness of low temperature noncoated austempered ductile iron.

Palabras clave : ductile iron; boriding; austenitization; austempering.

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