Abstract
An absorption of energy of 0⋅40 cal/g is observed in the range of temperature 180 to 245 °C on heating a slowly cooled specimen of
α
-brass at 2 °C/min. This absorption of energy increases markedly on isothermal annealing at temperatures below 190 °C; the maximum absorption being 0⋅86 cal/g. The absorption of energy is correlated with changes in electrical resistivity and the results of the energy and resistivity measurements are attributed to the destruction of order. The experimental observations may be explained by the destruction of long-range order with a critical temperature of 245 °C or by the destruction of short-range order at a more rapid rate below 245 °C than above.
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