Changes in microstructure of cold-worked aluminum-lithium alloy 1441 initiated by powerful pulsed ion beams

V. V. Ovchinnikov, G. E. Remnev, N. V. Gushchina, V. I. Gusel'nikov, S. M. Mozharovskii, A. V. Filippov, L. I. Kaigorodova

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The results of an electron microscopy study of alloy 1441 of the Al-Cu-Mg-Li-Zr-Mn system after cold rolling (e{open} = 72%) and subsequent irradiation with a powerful pulsed ion beam (70%C+ + 30%H+) in the pulsed-periodic mode (τ = 80 ns, f = 0. 1 Hz) and under the conditions of the generation of only one pulse (τ = 180 ns) are considered. The ion energy was 180 keV. It is shown by transmission electron microscopy that low irradiation doses D = 1 × 1014-2 × 1015 cm-2 of cold-worked alloy 1441 cause a noticeable transformation of a cellular dislocation structure formed in it. It is shown that, as the ion current density increases in the pulse, the intensity of structural transformations in the alloy increases.

Original languageEnglish
Pages (from-to)304-310
Number of pages7
JournalRussian Journal of Non-Ferrous Metals
Volume52
Issue number3
DOIs
Publication statusPublished - Jun 2011

Keywords

  • aluminum alloys
  • cold deformation
  • micro-structure
  • modification of the surface with particle beams
  • powerful pulsed ion beams
  • radiation-dynamic effect of accelerated ions
  • transformation of the dislocation structure
  • transmission electron microscopy

ASJC Scopus subject areas

  • Mechanics of Materials
  • Surfaces, Coatings and Films
  • Metals and Alloys

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    Ovchinnikov, V. V., Remnev, G. E., Gushchina, N. V., Gusel'nikov, V. I., Mozharovskii, S. M., Filippov, A. V., & Kaigorodova, L. I. (2011). Changes in microstructure of cold-worked aluminum-lithium alloy 1441 initiated by powerful pulsed ion beams. Russian Journal of Non-Ferrous Metals, 52(3), 304-310. https://doi.org/10.3103/S1067821211030175