Abstract
After plastic deformation the initial degree of short-range order (SRO), the contribution of point defects on ordering kinetics and the development of SRO in a defected structure were studied. In the present work the results of three different binary alloys (α-AuFe, α-AgZn, α-CuAl) are compared and discussed. Measurements of resistivity, differential scanning calorimetry (DSC) and microhardness were used to study short-range order kinetics within a defected microstructure. It was possible to separate resistivity changes caused by pure SRO changes from resistivity changes only due to defect annealing. Isothermal studies on the recrystallized alloy systems yield information on ordering kinetics. With a simple model for isothermal SRO-kinetics the separated data were fitted and the formation enthalpy, migration enthalpy and dislocation density for the deformed state were obtained. Differences in the annealing behaviour of the deformed microstructure between α-AgZn and α-CuAl as obtained by transmission electron microscopy (TEM) and light microscopy are discussed briefly.
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