Keywords: High-alloy graphitic irons silicon wear.Įn este trabajo se ha evaluado la influencia del contenido de silicio en la resistencia frente al desgaste y en las propiedades mecánicas de diferentes fundiciones con alto contenido en silicio del tipo Silal. In addition, various casting processes have been tested in order to determine their influence on the appearance of spheroidal graphite. At the same time, the cast irons with the lowest wear resistance are those that have flaky graphite and a purely ferrite matrix in their microstructure. The best wear behaviour was experienced by the cast irons with spheroidal graphite and a ferrite matrix in their microstructure. These results were related to microstructure, composition and casting processes of the cast irons. The Brinell hardness or every cast iron was measured and their wear resistance was calculated according to ASTM G99 standard, 'Standard Test Method for Wear Testing with a Pin-on-Disk Apparatus. The tribological and mechanical properties of various cast irons with different contents of carbon and silicon are studied. Received in revised form: July 29 th, 2014. Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, Madrid, España. Politécnica Superior, Universidade da Coruña, A Coruña, España. Escuela Politécnica Superior, Universidade da Coruña, A Coruña, España. García-Diez a, Carolina Camba-Fabal b, Ángel Varela-Lafuente c, Víctor Blázquez-Martínez d, José Luís Mier-Buenhombre e & Benito Del Río-López fĪ Escuela Politécnica Superior, Universidade da Coruña, A Coruña, España. Influencia del silicio en el comportamiento al desgaste de las fundiciones tipo 'Silal'Īna I. Influence of silicon on wear behaviour of 'Silal' cast irons

Q es silicio