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Coupled and competitive eutectic growth

Trepczyńska-Łent M.

Archives of Foundry Engineering

2011

Vol. 11, iss. 3 spec.

237--240

A description of the competitive growth is presented in the paper. The description is associated with the competition between eutectic structure and primary phase formation. A coupled zone for the eutectic solidification is drawn in the phase diagrams. The coupled zone is shown as a range of solute concentration versus under-cooling to justify the formation of the eutectic structure, exclusively. Interface growth temperatures of the single and coupled eutectic are illustrated schematically as a function of growth rates at a given composition Co.

Competitive growth and couplet growth zone in eutetic alloys in directional solidification

Trepczyńska-Łent M.

Journal of Polish CIMAC

2010

Vol. 5, no 3

229-234

Although significant studies on eutectic systems have been carried out in the past, some critical fundamental questions still remain unanswered. The following several critical aspects of coupled growth are being examined in this study: (a) the influence of interface energy and its anisotropy on the lamellar to rod transition; (b) the ability to form coupled (or cooperative) growth of the two phases in eutectic systems; (c) the stability of eutectic structure under rapid solidification conditions.