Paper Title:

The Effect of Al-17wt.%Si Alloy Melt Overheating on Solidification Process and Microstructure Evolution

Periodical Solid State Phenomena (Volume 176)
Main Theme Light Metals and their Alloys I - Technology, Microstructure and Properties
Edited by Agnieszka Botor-Probierz and Andrzej Kiełbus
Pages 29-34
DOI 10.4028/www.scientific.net/SSP.176.29
Citation Jaroslaw Piątkowski, 2011, Solid State Phenomena, 176, 29
Online since June, 2011
Authors Jaroslaw Piątkowski
Keywords Al-Si Alloy, Microstructure, Overheating Degree, Solidification, Thermal Analysis
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Abstract

The effect of overheating on the solidification process and microstructure evolution in AlSi17 silumin was discussed. The alloy melt was held for 40 minutes at 780, 860, 940 and 1020oC, and then cast at a temperature of 780oC to standard ceramic probe. Characteristic parameters of the AlSi17 alloy solidification process, especially Tliq, TE, Tsol, were determined. Examinations of microstructure were also carried out, showing that the higher was the overheating temperature, the higher was the degree of the primary silicon crystals refinement.