Microstructure stability and mechanical properties of ultrafine-grained zirconium alloy under prolonged thermal exposure

Yury Petrovich Sharkeev, Anna Yu Eroshenko, Pavel V. Uvarkin, Alexey I. Tolmachev, Nesibeli K. Akhmetova

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

Аннотация

The paper describes the experimental results in microstructure thermal stability and mechanical properties of ultrafine-grained zirconium alloy with 1 mass % Nb (Zr-1 mass %Nb) under prolonged thermal exposure. Ultrafine-grained zirconium alloy is produced by severe plastic deformation (SPD) method. It was proved that SPD method including multiple abc-pressing and multi-pass rolling, as well as further pre-recrystallizing annealing enhances the formation of ultrafine-grained structures with mean element size of 0.2 μm. Thermostability time interval of ultrafine-grained structure and the mechanical properties (in case of microhardness) under prolonged thermal exposure (up to 360 hours) for zirconium alloy was experimentally determined. It was proved that ultrafine-grained structure is stable at 400°? within 10 hours whilst keeping the microhardness level attained after SPD. In cases of continuous annealing time from 24 to 360 hours recrystallization processes develop intensively, followed by the decrease in microhardness and intensive growth of structure elements within the alloy.

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
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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