engleski

Use of SEM and EDS analysis in the investigation of Al-Si-Cu piston alloy cast porosity

Porosity formation was detected in the casting thinnest section in the proximity of the as cast surface and near the wall centerline. In order to investigate the cause of the porosity formation ligh microscopy was used to define as cast structure. After initial findings SEM and EDS analyses were performed. Based on the results it is posible to define cause of the observed porosity. A number of pores originates from the modul filling stage and entrainment of the oxide films, while others appear due to insufficient feeding during solidification.

casting; porosity; piston; SEM; EDS

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