Positron annihilation study of vacancy-type defects in Al single crystal foils with the tweed structures across the surface

Pavel Kuznetsov, Jacub Cizek, Petr Hruska, Wolfgang Anwad, Yuriy Sergeevich Bordulev, Andrei Lider, Roman Laptev, Yuri Mironov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

The vacancy-type defects in the aluminum single crystal foils after a series of the cyclic tensions were studied using positron annihilation. Two components were identified in the positron lifetime spectra associated with the annihilation of free positrons and positrons trapped by dislocations. With increasing number of cycles the dislocation density firstly increases and reaches a maximum value at N = 10 000 cycles but then it gradually decreases and at N = 70 000 cycles falls down to the level typical for the virgin samples. The direct evidence on the formation of a two-phase system "defective near-surface layer/base Al crystal" in aluminum foils at cyclic tension was obtained using a positron beam with the variable energy.

Original languageEnglish
Title of host publicationAdvanced Materials with Hierarchical Structure for New Technologies and Reliable Structures
PublisherAmerican Institute of Physics Inc.
Volume1683
ISBN (Electronic)9780735413306
DOIs
Publication statusPublished - 27 Oct 2015
EventInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2015 - Tomsk, Russian Federation
Duration: 21 Sep 201525 Sep 2015

Conference

ConferenceInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2015
CountryRussian Federation
CityTomsk
Period21.9.1525.9.15

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Kuznetsov, P., Cizek, J., Hruska, P., Anwad, W., Bordulev, Y. S., Lider, A., ... Mironov, Y. (2015). Positron annihilation study of vacancy-type defects in Al single crystal foils with the tweed structures across the surface. In Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures (Vol. 1683). [020116] American Institute of Physics Inc.. https://doi.org/10.1063/1.4932806