Features of interface formation in crystallites under mechanically activated diffusion. A molecular dynamics study

Anton Yu Nikonov, Andrey I. Dmitriev, Ivan S. Konovalenko, Evgeny Alexangrovich Kolubaev, Sergey V. Astafurov, Sergey G. Psakhie

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

In this paper, we carried out investigation of behavior of the material under loading condition identical those used in FSW using molecular dynamic method. The loading was modelled by a rigid rotating "tool" that movies along boundary between two grains. We considered pairing of two crystallites of copper, crystallites of copper and iron, and two crystallites of aluminum 2024. Analysis of the structure of the sample showed the intermixing and stirring of dissimilar atoms as a result the FSW tool pass at the inter-crystallite boundary. It was shown, that under certain condition of loading when tool passes there a region where atoms can occupying the original position of the crystal lattice. We also show influence of an additional oscillating impact applied to the moving tool on the structure of the resulting weld. The simulation results obtained can be used for understanding the processes realized under mechanically activated diffusion.

Original languageEnglish
Title of host publicationProceedings of the 8th International Conference on Computational Plasticity - Fundamentals and Applications, COMPLAS 2015
PublisherInternational Center for Numerical Methods in Engineering
Pages982-991
Number of pages10
ISBN (Print)9788494424465
Publication statusPublished - 2015
Event13th International Conference on Computational Plasticity, COMPLAS 2015 - Barcelona, Spain
Duration: 1 Sep 2015 → 3 Sep 2015

Other

Other13th International Conference on Computational Plasticity, COMPLAS 2015
CountrySpain
CityBarcelona
Period1.9.15 → 3.9.15

Keywords

  • Deformation
  • Mechanical activation
  • Microstructure
  • Molecular dynamics

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Theoretical Computer Science

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    Nikonov, A. Y., Dmitriev, A. I., Konovalenko, I. S., Kolubaev, E. A., Astafurov, S. V., & Psakhie, S. G. (2015). Features of interface formation in crystallites under mechanically activated diffusion. A molecular dynamics study. In Proceedings of the 8th International Conference on Computational Plasticity - Fundamentals and Applications, COMPLAS 2015 (pp. 982-991). International Center for Numerical Methods in Engineering.