Quantum mechanics

Deformation (meteorology)

Metallurgy

Materials science

Carbide

Creep

Grain boundary

Thermodynamics

Physics

Diffusion

Microstructure

Composite material

Kinetics

Martensite

Dislocation

The Physics of Metals and Metallography

The kinetics of the growth of M23C6 carbide particles in 9% Cr martensitic steel with a high boron content is studied under conditions of long-term aging and creep. It is shown that the grain-boundary diffusion is a mechanism that controls the coarsening of these carbides during the aging. Deformation accelerates the coarsening of particles during creep, which can be explained by additional diffusion along dislocation lines.

The Role of Deformation in Coarsening of M23C6 Carbide Particles in 9% Cr Steel