Kinetics of decomposition of supersaturated solid solutions of chromium bronzes

Abstract

1. The C-curves of BrKh07 bronze with hardening from 1050, 1010, 920, and 870°C have two minimums in the stability of the solid solution. 2. An increase in hardening temperature leads to a significant decrease in the stability and an increase in the rate of decomposition of the supersaturated solid solution at lower temperatures. 3. At higher aging temperatures the particles of second phase are precipitated at the grain boundaries, and at lower aging temperatures in the whole body of the grain. 4. The determining influence on the stability of the solid solution at higher aging temperatures is the chromium content in the solid solution and the grain size, while at lower aging temperatures it is the hardening vacancy concentration and the chromium content in the solid solution.