Effect of cooling rate on the solidification behavior of ac AlSi7Cu2 alloy

L. A. Dobrzański, R. Maniara, J. Sokolowski

Аннотация


This paper describes the effect of cooling rate on the size of the grains, SDAS and thermal characteristic results of the AC AlSi7Cu2 cast alloy. The solidification process was studied using the cooling curve and crystallization curve at solidification rate ranging from 0,16 up to 0,71 °C∙s-1. It was determined that higher solidification rate increases the aluminum dendrite nucleation temperature and solid fraction at the dendrite coherency point, which implies that mass feeding is extended. In addition, it was observed that the non-equilibrium solidus temperature and the size of the grains, SDAS constituent decreases when the solidification rate increases.

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Литература


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