Abstract:Constitutive equations are developed for the mechanical response of a host medium driven by diffusion of guest atoms under an arbitrary three-dimensional deformation with finite strains. The model distinguishes two states of a guest atom: mobile and immobilized (due to alloying of host and guest atoms). Derivation of reaction–diffusion equations for transport and immobilization of guest atoms, as well as stress–strain relations for the viscoplastic behavior of the host material, is grounded on the free-energy … Show more
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