The role of deformation in coagulation of M₂₃C₆ carbide particles in 9% CR steel

The kinetics of the growth of M₂₃C₆ carbide particles in 9% Cr steel of the martensitic class with a high content of boron is studied under conditions of prolonged aging and creep. It is shown that the grainboundary diffusion is a mechanism that controls the coagulation of these carbides in the case of annealing. Deformation accelerates the enlargement of particles during creep, which is explained by additional diffusion along dislocation line