Publication:
Macro-Scale strain localization in highly irradiated stainless steel investigated using digital image correlation

Дата
2022
Авторы
Merezhko, M. S.
Merezhko, D. A.
Rofman, O. V.
Dikov, A. S.
Maksimkin, O. P.
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Научные группы
Организационные подразделения
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Организационная единица
Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
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Аннотация
© 2022Low-temperature radiation hardening and embrittlement is a major life-limiting radiation effect in austenitic stainless steels (AuSS). A strain-induced phase transformation to martensite is observed during plastic deformation of low-Ni AuSS, often increasing strain hardening and reducing ductility. However, in this paper we show an unexpectedly high ductility of 18–37% during room-temperature mechanical testing of a 0.12C–18Cr–10Ni–0.8Ti AuSS (AISI 321 analogue) cut from the hexagonal wrapper of a fuel assembly irradiated in the BN-350 sodium-cooled fast reactor located in Aktau, Kazakhstan. Using digital image correlation, we reveal two completely different deformation mechanisms in samples with the same chemical composition, irradiated to very similar doses. The roles of the martensitic γ→α′ transformation and neutron irradiation parameters explain the differences between plastic deformation mechanisms in the specimens.
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Macro-Scale strain localization in highly irradiated stainless steel investigated using digital image correlation / Merezhko, M.S. [et al.] // Acta Materialia. - 2022. - 231. - 10.1016/j.actamat.2022.117858
URI
https://www.doi.org/10.1016/j.actamat.2022.117858
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85127482125&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000912385700002
 https://openrepository.mephi.ru/handle/123456789/28907
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