STUDY ON STRUCTURES OF Al-CuAl_2 EUTECTIC SOLIDIFIED UNDER ELECTROMAGNETIC STIRRING

Abstract

Abstract: An investigation on electromagnetically-stirred solidification of Al-CuAl2 eutectic system is presented in this paper. With electromagnetic stirring in solidification, structural transition from lamellar to rod-like eutectic has been found in the as-cast structures, and provided strong stirring is applied, proeutectic growth of α-Al phase is enhanced. Moreover, the interphase spacing of eutectic is clearly increased with melt flow intensified. Numerical computation of flow field is also presented, and the effect of stirring on structural formation is discussed.

Key words: electromagnetic stirring, eutectic, interphase spacing, fluid flow

W.Q. Zhang; Q.M. Liu; Y.F. Zhu; Y.S. Yang and Z.Q. Hu(State Key Laboratory of RSA, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China). STUDY ON STRUCTURES OF Al-CuAl_2 EUTECTIC SOLIDIFIED UNDER ELECTROMAGNETIC STIRRING[J]. Acta Metallurgica Sinica (English Letters), 1997, 10(6): 461-464.

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STUDY ON STRUCTURES OF Al-CuAl_2 EUTECTIC SOLIDIFIED UNDER ELECTROMAGNETIC STIRRING

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