Plasticity of an extra-strong nanocrystalline stainless steel controlled by the “dislocation-segregation” interaction

N. A. Enikeev*, I. V. Lomakin, M. M. Abramova, A. M. Mavlyutov, A. A. Lukyanchuk, A. S. Shutov, X. Sauvage

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

We study three structurally different states of nanocrystalline 316 steel and show that the state, where boundaries containing excess concentration of alloying elements are combined with mobile dislocations in grain interiors, allows maintaining extraordinarily high strength and remarkably enhanced plasticity. Underlying mechanisms featuring interaction between the segregations and mobile dislocations are discussed.

Original languageEnglish
Article number130235
JournalMaterials Letters
Volume301
DOIs
Publication statusPublished - 15 Oct 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • Deformation mechanisms
  • Grain boundary
  • Nanostructured materials
  • Plasticity
  • Segregation
  • Stainless steels

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