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Quantitative microstructural characterization of aligned eutectics by electrical analog modeling

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Abstract

The formal theory of conduction in multiphase systems as derived by Rayleigh is compared with experimental results from fabricated Bi-Cu composite model systems having known minor phase particle shape and well defined phase particle distributions. The development of a rigorous three dimensional fibrous analog model by the modification of existing analog concepts and utilization of the Rayleigh analysis coupled with resistance measurements performed on more complex Bi-Cu composite systems is presented. This fiber analog model is applied to the directionally aligned Sb-InSb eutectic utilizing available resistivity data. Via this model a quantitative microstructural characterization, consistent in two orthogonal directions, is achieved and these data are presented.

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Formerly Graduate Student, Department of Metallurgy and Material Science, Lehigh University, Bethlehem, Pa.

This paper is based upon a thesis submitted by W. G. WATSON in partial fulfillment of the degree of Doctor of Philosophy.

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Watson, W.G., Hahn, W.C. & Kraft, R.W. Quantitative microstructural characterization of aligned eutectics by electrical analog modeling. Metall Trans A 6, 151–158 (1975). https://doi.org/10.1007/BF02673683

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