Rev.Adv.Mater.Sci. (RAMS)
No 2, Vol. 48, 2017, pages 170-178


A.E. Romanov, A.L. Kolesnikova, I.S. Yasnikov, A.A. Vikarchuk, M.V. Dorogov,
A.N. Priezzheva, L.M. Dorogin and E.C. Aifantis


Disclinated microcrystals (DMCs) can be obtained in the form of decahedrons, icosahedrons, and pentagonal prisms. We present results of metallic DMC fabrication by employing the process of electrodeposition. We further provide experimental evidence of structural transformations in DMCs during electrodeposition and heat treatment. We propose a model of DMC in the framework of continuum mechanics and discuss some typical results for calculations of the stresses and internal energy for elongated and sphere-like crystalline objects containing either one or six disclinations, or a distributed spherical disclination. Relaxation of mechanical stresses caused by disclinations leads to structural transformations in DMCs. We review the existing models of stress relaxation in DMCs and discuss new models of stress relaxation through dislocation loops or additional disclination ensembles in the DMC interior or lattice mismatched shells formed on the DMC surface.

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