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      Effect of particle size and inter-particle spacing on dislocation behaviour of Nickel based super alloys

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          Abstract

          Ni-based superalloys have been the subject of enormous usage in scenarios where the loading is heavy and often occurs at elevated temperatures. The strengthening mechanisms that come into play within the metallic lattice have been studied extensively as micromechanical MMC models. These continuum formulations suffer from several limitations. The underlying mechanisms at the atomistic scale have not yet been well understood. The report attempts to model the interaction of moving dislocation with cuboidal precipitates and explain the strengthening effect. The effect of particle size and inter-particle distance on the strength are evaluated. Several physically meaningful results have also been interpreted and shown.

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          Precipitation hardening

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            A macroscopic model for plastic flow in metal-matrix composites

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              Effect of inclusion shape on stiffness of isotropic and transversely isotropic two-phase composites

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                Author and article information

                Journal
                2017-07-14
                Article
                1707.04398
                9ac659de-a390-49a4-85bb-26f3793e75d4

                http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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                Custom metadata
                6 pages
                physics.comp-ph cond-mat.mtrl-sci

                Condensed matter,Mathematical & Computational physics
                Condensed matter, Mathematical & Computational physics

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