Digitale Medien
s.l. ; Stafa-Zurich, Switzerland
Advanced materials research
Vol. 32 (Feb. 2008), p. 271-274
ISSN:
1662-8985
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Maschinenbau
Notizen:
A model based on the cellular automaton (CA) technique for the simulation ofsolidification microstructure has been developed. An improved solid fraction calculating method isused, in which the solid fraction of the interface unit is calculated by temperature compensationmethod combined with local equilibrium phase diagram. And then, a quadratic equation of solidfraction can be calculated according to the local temperature, solute concentration and curvature.The method avoids the assumption of the position and shape of solid/liquid interface. By using thismodel on A356 aluminium alloy, a dendrite growth process is simulated. The model can predict thefinal microstructure both grain size and grain morphology. It also predicts the Si concentrationdistribution in both solid and liquid phases
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.32.271.pdf
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