The Role of Deformation in Coarsening of M23C6 Carbide Particles in 9% Cr Steel
E. Tkachev, Andrey Belyakov, Rustam Kaibyshev
Abstract
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.
Topics & Concepts
CreepCarbideMaterials scienceDislocationMetallurgyDiffusionDeformation (meteorology)MartensiteGrain boundaryKineticsMicrostructureComposite materialThermodynamicsPhysicsQuantum mechanicsHigh Temperature Alloys and CreepMicrostructure and Mechanical Properties of SteelsMetal Alloys Wear and Properties