642 KB16 KB200020242014Mrvar, PrimožPetrič, MitjaSteinacher, MatejZupanič, Francletnik:48številka:6str. 917-921ISSN:1580-2949COBISSID:18322966URN:URN:NBN:SI:doc-PTKCMRNYenInštitut za kovinske materiale in tehnologijeMateriali in tehnologijeAlSi9Cu3 alloyaluminijeva zlitinafluiditygrain refinementlivnostmodificationmodificiranjesolidification timestrjevalni časudrobnjevanjeEffect of AlTi5B1 and AlSr10 additions on the fluidity of the AlSi9Cu3 alloy| Vpliv dodatkov AlTi5B1 in AlSr10 na livnost zlitine AlSi9Cu3|This work studies the effect of the AlTi5B1 and AlSr10 additions on the fluidity and the solidification time of the AlSi9Cu3 casting alloy. The fluidity was investigated by determining the flow length in a spiral-shaped mould. The solidification time was measured with a thermocouple positioned at the ingate bottom. An individual pouring into the preheated (200 °C) metallic mould was done at different pouring temperatures ((640, 670, 700, and 710) °C). In all the cases, the fluidity was improved with the increasing pouring temperatures. An addition of the AlTi5B1grain refiner to the basic alloy reduced both the grain size and the fluidity, whilst the solidification time was similar to that of the basic alloy. On the other hand, an addition of the AlSr10 modifier refined the ßSi eutectic phase, increased the fluidity and prolonged the solidification time in comparison to the basic alloy. The fluidity was proportional to the solidification time. Thus, by carrying out a simple thermal analysis and determining the solidification time, it is possible to predict the fluidityTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaInštitut za kovinske materiale in tehnologije