Finite element simulation of solidification of aluminium casting alloy LM 25

Authors: Brown, S. G. R.; Spittle, J. A.

Source: Materials Science and Technology, Volume 6, Number 6, June 1990 , pp. 543-547(5)

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Abstract:

A two-dimensional axisymmetric finite element analysis is applied to the simulation of the solidification of the aluminium casting alloy LM 25. Solute redistribution during primary phase freezing is described using the Schell equation, and the two-phase eutectic is assumed to solidify over a temperature range of 2 K. Excellent agreement is found between the computed and experimental thermal analysis data for a dry sand axisymmetric casting. The model predictions are used to discuss the observed variation of casting density with distance from the feeder in unmodified dry sand castings with and without a chill, and a relationship is obtained for casting density at any location as a function of the computed value of the distance between the 90 and 100% solid isotherms.

MST /942

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/026708390790191620

Publication date: 1990-06-01

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