Positron annihilation spectroscopy of vacancy type defects in submicrocrystalline copper under annealing

Pavel V. Kuznetsov, Andrey M. Lider, Yuriy S. Bordulev, Roman S. Laptev, Yuriy P. Mironov, Tanzilya V. Rakhmatulina, Alexandr V. Korznikov

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

1 Цитирования (Scopus)

Аннотация

The annealing of submicrocrystalline copper produced by the equal channel angular pressing followed by rolling was studied using positron annihilation and XRD analysis. In as-prepared samples, positrons are trapped at vacancies, concentration of which is very high (∼1.6 × 10-4) and dislocation type defects; however, a few percent of positrons annihilate from a free state. Increasing annealing temperature leads to the formation of vacancy complexes. The main positron trap centers in the temperature range ΔT = 20-300°C are vacancies and their small complexes of two or three vacancies. The dominant centers of positron trapping in the temperature range ΔT = 300-670°C are dislocation-type defects.

Язык оригиналаАнглийский
Название основной публикацииAdvanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016
Подзаголовок основной публикацииProceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016
ИздательAmerican Institute of Physics Inc.
Том1783
ISBN (электронное издание)9780735414457
DOI
СостояниеОпубликовано - 10 ноя 2016
СобытиеInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016 - Tomsk, Российская Федерация
Продолжительность: 19 сен 201623 сен 2016

Конференция

КонференцияInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016
СтранаРоссийская Федерация
ГородTomsk
Период19.9.1623.9.16

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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