Observation of deep dislocation structures and "long-range effect" in ion-implanted α-Fe

A. N. Didenko, E. V. Kozlov, Yu P. Sharkeev, A. S. Tailashev, Alexander Ilyich Ryabchikov, L. Pranjavichus, L. Augulis

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Abstract

The results of experimental investigations of "long-range effect" by ion implantation into α-Fe are presented. C, Fe, W, Hf and Ar ions were implanted into α-Fe in continuous and pulse-periodic regimes. The ion energy varied in the range 40-150 keV and the irradiation dose varied in the range 1 × 1015-1 × 1018 ions cm-2. It has been established that dislocation structures are formed in the near-surface layer of pure metals by ion implantation. The thickness of the near-surface layers with the dislocation structure induced by ion implantation is in the range 20-100 μm. Stress measurements and calculations in the near-surface layers by ion implantation show that the stresses are considerably greater than the yield strength. The stresses result in the plastic deformation of the near-surface layers of the irradiated materials. The plastic deformation is the main reason for the dislocation structure development.

Original languageEnglish
Pages (from-to)97-104
Number of pages8
JournalSurface and Coatings Technology
Volume56
Issue number2
DOIs
Publication statusPublished - 9 Jan 1993

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ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

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