Kinetics of phase transformations in the cold-worked Cu-40 at. % Pd alloy

Measurements of the electrical resistivity were used to study the kinetics of phase transformations in the cold-worked Cu-40 at % Pd alloy upon vacuum annealings. Diagrams of isothermal transformations were constructed: the r esults are compared with available data. The alloy was shown to become orde red upon isothermal annealings over the whole temperature range studied (up to 1000 degreesC). Upon annealings above 300 degreesC, the order is establ ished before the alloy has time to be heated to a desired temperature. It w as found experimentally that the temperature ranges of order-disorder trans formation observed in our case show a discrepancy with those given in the a vailable binary phase diagrams.