Diffusion creep

Diffusion creep is a mechanism of deformation that occurs in materials, particularly in solids under high temperature and stress conditions. It is characterized by the movement of atoms or vacancies within the crystal lattice of a material, allowing it to deform without the need for dislocation movement, which is a more conventional mechanism of plastic deformation. The process occurs through the diffusion of atoms in the lattice, which can happen via two main types: grain boundary diffusion and lattice diffusion.