Features of changes in the structure and properties of titanium nickelide irradiated with MeV xenon ions

Sergei Ghyngazov, Valentina Poltavtseva, Alexander Larionov, Damir Satpaev

Research output: Contribution to journalArticle

Abstract

The effect of irradiation with 141 MeV and 231 MeV xenon ions and irradiation temperatures T = 100 and 250 °C on the structural-phase state and properties of titanium nickelide in its initial martensitic-austenitic and austenitic states was experimentally studied. The radiation effects revealed are as follows: changed phase composition caused by B19′ → B2, B2 → R transformations and recovery of the martensitic phase B19′ at 250 °C; increased nanohardness, microhardness and electrical resistance at 100 °C due to formation of track nanostructures and radiation-induced defects; radiation-induced accumulation of xenon in the near-surface layer. In addition, softening of the near-surface area and decreased electrical resistance were found for the martensitic-austenitic state at irradiation temperature of 250 °C, which was caused by the changed content of the Ni-Ti phase with the B2 phase and R phase.

Original languageEnglish
Pages (from-to)23-27
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume464
DOIs
Publication statusPublished - 1 Feb 2020

Keywords

  • Radiation effects
  • Titanium nickelide
  • Xenon ions

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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