Artículos de revistas
Study of dimensional change of high-silicon ductile iron with ADI and Dual-Phase-ADI microstructures starting from different as-cast structures
Fecha
2018-05Registro en:
Basso, Alejandro Daniel; Dai Pra, Ana Lucia; Echeverría, María Dolores; Sosa, Amadeo Daniel; Study of dimensional change of high-silicon ductile iron with ADI and Dual-Phase-ADI microstructures starting from different as-cast structures; Taylor & Francis; International Journal Of Cast Metals Research; 31; 3; 5-2018; 144-152
1364-0461
CONICET Digital
CONICET
Autor
Basso, Alejandro Daniel
Dai Pra, Ana Lucia
Echeverría, María Dolores
Sosa, Amadeo Daniel
Resumen
In this work the percent dimensional change (DC%) and its dispersion in high silicon Ductile Iron with ADI and Dual-Phase-ADI structures obtained through heat treatment starting from different as-cast microstructures, was studied. Specimens were obtained from three different melts with Si content ranging from 3.1 to 4.2%. Dual-Phase-ADI structures were obtained using special heat treatment, starting from as-cast structures. Regarding dimensional change, DC% in ADI and Dual-Phase-ADI decrease as Si% and the proportion of ferrite phase in as-cast specimens increased. On the other hand, DC% increased with austenitizing temperature and ausferrite content in the final microstructure. A fuzzy model to predict DC% in ADI parts was adapted to include DC% prediction in Dual-Phase-ADI. The fuzzy model allowed to predict the DC% for ADI and Dual-Phase-ADI parts with an root mean square <0.05%.