CHROMIUM CARBIDES IN THE RECRYSTALLIZATION OF A SINGLE-PHASE SOLID-SOLUTION IN COLD-HARDENED ALLOYS OF TYPE KH30K15M3T

The influence of chromium carbides on the recrystallization of cold-ur orked alloy containing 29% Cr, 16% Ca, 2.8% Mo, and 0.52% Ti (the rema inder is Fe) is investigated. The influence of interstitial-phase depo sition in the single-phase at region on the recrystallization process a reversible arrow alpha + sigma in the presence of cold working may t ake different forms. In near-critical cold working, after which recrys tallization proceeds by growth of the less cold-worked grains at the e xpense of the more cold-worked grains, the interstitial phases deposit ed along the grain boundaries - in particular, Cr23C6 - stabilize the matrix and retard recrystallization, With considerable cold hardening, after which recrystallization proceeds by the formation and growth of new grains, the interstitial phases facilitate the formation of new r ecrystallizational nuclei.