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Quench modification of aluminium-silicon eutectic alloys

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Abstract

Directional solidification of aluminium-silicon eutectic alloys were carried out in order to investigate the mechanism by which the quench modification takes place. For this purpose a new type of Bridgman furnace was designed which can attain a high temperature gradient and a high interfacial growth velocity up to 1000 μm−1. It is established that the fibrous structure is the result of faceted-non-faceted growth of the coarse silicon particle at high solidification rate. It is observed that refining of the flake structure closely follows the characteristics of normal eutectic.

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Khan, S., Elliott, R. Quench modification of aluminium-silicon eutectic alloys. JOURNAL OF MATERIALS SCIENCE 31, 3731–3737 (1996). https://doi.org/10.1007/BF00352787

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