Rapid solidification and decomposition of a hypomonotectic Al-Cd alloy

Chattopadhyay, K. ; Ramachandrarao, P. (1980) Rapid solidification and decomposition of a hypomonotectic Al-Cd alloy Journal of Materials Science, 15 (3). pp. 685-692. ISSN 0022-2461

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Official URL: http://www.springerlink.com/content/x850k131641558...

Related URL: http://dx.doi.org/10.1007/BF00551735


Rapid solidification of Al-1.5at % Cd alloy can lead to a wide variety of morphologies. The sequence of the morphologies with increasing foil thickness is single phase → elongated cell → hexagonal cell → dendrite. Monotectic reaction ahead of the solid-liquid interface leads to a unique distribution of the cadmium particles. Models are proposed to explain the genesis of the distribution of these particles. The study of the decomposition behaviour confirms the existence of a preprecipitation stage. The G.P. zones are found to be spherical and lead to a precipitate-free zone near grain/cell boundaries. The coarsening of the precipitates at liquid temperatures takes place by the migration and coalescence of the droplets.

Item Type:Article
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ID Code:6604
Deposited On:22 Oct 2010 06:29
Last Modified:30 May 2011 11:19

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