Modelling Microstructure and Properties: The Contributions of Grain Size, DAS and Bifilms

Abstract:

The modelling of microstructure, and hence the properties, of cast alloys has so far been attempted assuming the liquid metal is free from defects. The growing appreciation that bifilms, of size measured in millimeters, are usually abundant in liquid metals, and control many features of the casting, has led to this paper in which some of the known and some of the expected effects are reviewed. It is suggested that bifilms cause major effects on microstructure and properties and their presence can vastly overpower the effect of traditionally simulated structural features.

• Periodical: Materials Science Forum (Volumes 519-521)
• Pages: 1453-1460
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.519-521.1453
• Online since: July 2006
• Authors: John Campbell, Murat Tiryakioğlu
• Keywords: Aluminium Alloy, Bifilms, Defect, Distribution Automation System (DAS), Grain Size, Microstructure

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