Influence of melt temperature on Rapid solidification of Al-Y and Al-Si alloy system
2009 (English)In: Transactions of the Indian Institute of Metals, ISSN 0019-493X, Vol. 62, no 4-5, 515-519 p.Article in journal (Refereed) Published
Solidification behavior of Al-Y and Al-Si were investigated for different melt temperatures. Levitation casting technique was used to achieve a cooling rate of around similar to 2000K/s during the experiment. Light optical microscopy (LOM) and Scanning electron microscopy (SEM) were used to analyze the samples. An energy dispersive system (EDS) analysis of SEM was performed on the samples to identify the phases. Plate like structure of Al8Y3 primary phase was observed at low melt temperature with small percentage of peritectic transformation of Al8Y3 and liquid melt into Al9Y2. A pre-dentritic star like crystal of Al3Y was observed in a fine eutectic matrix at very high melt temperature. Amount and number of primary Si crystals formed in a unit area during the solidification increases as the melt temperature increases. It is believed the melt temperature affects the solidification pattern by changing chemical short range order.
Place, publisher, year, edition, pages
2009. Vol. 62, no 4-5, 515-519 p.
rapid solidification, Al-Y alloy, Al-Si alloy, melt temperature, Al8Y3, Al3Y
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-14424ISI: 000276133700051OAI: oai:DiVA.org:kth-14424DiVA: diva2:332461
QC 201008052010-08-052010-08-052010-08-05Bibliographically approved