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A fibre reinforced in situ metal matrix composite (MMC) consisting of Cu and 20 mass% Nb is manufactured by large strain cold rolling. The microstructure of the composite is investigated by means of optical and electron microscopy. The normal conducting properties of the MMC sheets in the presence of external magnetic fields are studied and compared to the electromagnetic behaviour of pure Cu and Nb sheets. The findings are discussed in terms of the microstructural changes which take place during rolling deformation. The resistivity of the MMC is simulated by assuming inelastic scattering of the condution electrons at the internal phase boundaries. Both, experiment and simulation, substantiate that the amount of internal boundaries and the filament spacing have considerable influence on the normal conducting properties of Cu-20 mass% Nb.
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Hangen et al. (1995) studied this question.
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