Grain size effect on microstructural properties of 3D nanocrystalline magnesium under tensile deformation

A Moitra, COMPUTATIONAL MATERIALS SCIENCE, 79, 247-251 (2013).

DOI: 10.1016/j.commatsci.2013.05.051

The strength of nanocrystalline (NC) hexagonal closed packed (hcp) magnesium has been studied using computer simulations. Three dimensional NC magnesium materials are developed using Voronoi tessellation in which a random distribution of grains is generated. The microstructural properties and mechanical behaviors under tensile loading are investigated using molecular dynamics simulations. A size scale effect related to the yield stress in the specimen is evidenced. A transition from grain size softening to grain size hardening has been observed for a 10 nm average grain size. (C) 2013 Elsevier B. V. All rights reserved.

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