Temperature and interparticle spacing measurements are presented for directionally solidified Al–CuAl2 and Al–Si eutectic alloys. The results show that care must be taken to ensure that steady state heat flow conditions are established during directional solidification and that the correct definition of spacing is used to obtain interparticle spacing–growth velocity relationships that can be used to assess current eutectic solidification models. The results presented for the Al–Si eutectic show a strong temperature gradient dependence of the spacing–growth velocity relationship which is not predicted by the most recent detailed solidification models.
JACKSONK. A. and HUNTJ. D.: Trans. Met. Soc. Amer. Inst. Min. Met. Eng.,1966, 236, 1129.
3.
SEETHARAMANV. and TRIVEDIR.: Metall. Trans.,1988, 19A, 2955.
4.
COOKSEYD. J. S., MUNSOND., WILKINSONM. P., and HELLAWELLA.: Philos. Mag.,1964, 10, 745.
5.
CLARKJ. N. and ELLIOTTR.: Metall. Trans.,1976, 7A, 1197.
6.
MAGNINP. and KURZw.: Acta Metall., 1987, 35, 1119.
7.
MAGNINP. and TRIVEDIR.: Acta Metall., 1991, 39, 453.
8.
ELLIOTTR.: Cast Met., 1988, 1, 29.
9.
LIUJ., ZHOUY., and SHANGB.: Acta Metall., 1990, 38, 1625.
10.
GRUGELR. and KURZW.: Metall. Trans.,1987, 18A, 1137.
11.
MAGNINP., MASONJ. T., and TRIVEDIR.: Acta Metall., 1991, 39, 469.
12.
HUNTJ. D.: Mater. Sci. Eng.,1984, 65, 75.
13.
HANNA, SHU-ZU LUM. D. and HELLAWELLA.:Metall. Trans., 1984, 15A, 459.
14.
HAMEDQ. S., ELLIOTTR., and COOPERP. S.: in ‘Light metals, 1992’, Proc. Tech. Sessions at 121st TMS Annual Meeting, San Diego, CA, March 1992, The Minerals, Metals and Materials Society, p. 1391.
15.
ELLIOTTR. and GLENISTERS. M. D.: Acta Metall., 1980, 28, 1489.
16.
KHANS., OURDJINIA., and ELLIOTTR.: in preparation.
