Abstract
During β→α transformation of a Cu-Al alloy containing about 9%Al, segregation of solute atoms was found to occur in a similar manner as the segregation which occurs during solidification of alloys. The amount of (α+δ) eutectoid caused by the segregation increased at greater rates of cooling from 975°C. A long-time annealing at 975°C, the β phase range of the alloy, resulted in large grain sizes of α phase, which caused much segregation of solute atoms. The effect of cooling rate on the amount of segregation during solid-solid transformation was compared to that of rate of solidification on the amount of the segregation during liquid-solid transformation. But the effect of α-grain size on the amount of segregated eutectoid was attributed to the rate of nucleation of α within β phase.
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