Blog
About

  • Record: found
  • Abstract: found
  • Article: found
Is Open Access

Effect of Co Distribution on Plastic Deformation of Nanocrystalline Al-10.2 at.% Co Alloy

Read this article at

ScienceOpenPublisher
Bookmark
      There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

      Abstract

      Molecular dynamics is employed to study stress-strain curves obtained during high strain rate deformation of nanocrystalline Al-10.2 at.% Co alloy with (i) randomly distributed Co atoms (Al-Co substitutional solid solution) and (ii) Co atoms segregated in grain boundaries (GBs) of the alloy. The effect of Co distribution, deformation temperature, and the presence of hydrostatic pressure on the stress-strain relation is analyzed. The results are compared to that for nanocrystalline pure Al. It is found that the strength of the Al-Co solid solution is lower than that of the pure Al, while GB segregations of Co increase its strength. The alloys, regardless of the type of Co distribution, under shear loading with no hydrostatic pressure demonstrate higher ductility in comparison with the pure Al. The shear modulus of the Al-Co alloy with the GB segregations is noticeably larger than that of the pure Al and the Al-Co solid solution in a wide range of temperatures. The results of the study show that the GB segregations of Co can have a positive effect on the mechanical properties of nanocrystalline Al.

      Related collections

      Most cited references 53

      • Record: found
      • Abstract: not found
      • Article: not found

      Fast Parallel Algorithms for Short-Range Molecular Dynamics

        Bookmark
        • Record: found
        • Abstract: not found
        • Article: not found

        Embedded-atom method: Derivation and application to impurities, surfaces, and other defects in metals

          Bookmark
          • Record: found
          • Abstract: not found
          • Article: not found

          Using high-pressure torsion for metal processing: Fundamentals and applications

           A ZHILYAEV,  T Langdon (2008)
            Bookmark

            Author and article information

            Journal
            Journal of Nanomaterials
            Journal of Nanomaterials
            Hindawi Limited
            1687-4110
            1687-4129
            2015
            2015
            : 2015
            :
            : 1-8
            10.1155/2015/231848
            © 2015

            http://creativecommons.org/licenses/by/3.0/

            Comments

            Comment on this article