Abstract
Abstract Results are presented for the electrical resistivities of iron and five iron-chromium alloys of up to 5·58% chromium content, at temperatures ranging from that of liquid helium to above the alpha-gamma transformation of each sample. Both the temperature of transformation and the consequent decreases in apparent electrical resistivity (neglecting dimensional changes) are approximately linear functions of the chromium content. For the series studied the transformation temperature decreases from about 910°0 to 850°c, whilst the decrease in resistance increases from about 0·8 to 2·2%. Hysteresis is observed on cooling.
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