Abstract:The changes of mechanical and electrical properties as well as lattice distortion of cold deformed silver with high purity of 99.999% were studied in its recovery processes at 23 and 50℃temperatures. The high pure silver showed a low recrystallization temperature of 70℃and obvious natural recovery softening effect. The recovery process was quickened with increasing cold deformation degree and rising age temperature, obeying an isothermal recovery rate equation: ln(x0/x) = Kt.The recovery activation energy of the high pure silver was found to beE=20kJ/mol, and the recovery process was mainly controlled by point  defect recovering mechanism.

Key words: silver　recovery　recrystallization