Phase composition in NiTi near-surface layers after electron beam treatment and its variation depending on beam energy density

Marina G. Ostapenko, Ludmila L. Meisner, Aleksandr I. Lotkov, Ekaterina Y. Gudimova

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

Аннотация

In the work, we study the mechanisms of structural phase state formation in NiTi surface layers after lowenergy pulsed electron beam irradiation depending on the electron beam energy density. It is revealed that after electron beam treatment of the NiTi specimens at energy densities E1 = 15 J/cm2, E2 = 20 J/cm2, and E3 = 30 J/cm2, a series of effects is observed: The absence of the Ti2Ni phase and the presence of new peaks correspond to the B19′ martensite phase with monoclinic structure. Estimation of the relative volume content of the B2 and B19′ phases from the total intensity of their peaks shows that the percentage of the martensite phase increases from ∼5 vol.% in the NiTi specimen irradiated at E1 = 15 J/cm2 to ∼80 vol.% in the NiTi specimen irradiated at E3 = 30 J/cm2. It is found that in the NiTi specimens irradiated at E ≤ 20 J/cm2, the layer that contains a martensite phase resides not on the surface but at some depth from it.

Язык оригиналаАнглийский
Название основной публикацииAIP Conference Proceedings
ИздательAmerican Institute of Physics Inc.
Страницы451-454
Число страниц4
Том1623
ISBN (печатное издание)9780735412606
DOI
СостояниеОпубликовано - 2014
СобытиеInternational Conference on Physical Mesomechanics of Multilevel Systems 2014 - Tomsk, Российская Федерация
Продолжительность: 3 сен 20145 сен 2014

Другое

ДругоеInternational Conference on Physical Mesomechanics of Multilevel Systems 2014
СтранаРоссийская Федерация
ГородTomsk
Период3.9.145.9.14

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Цитировать

    Ostapenko, M. G., Meisner, L. L., Lotkov, A. I., & Gudimova, E. Y. (2014). Phase composition in NiTi near-surface layers after electron beam treatment and its variation depending on beam energy density. В AIP Conference Proceedings (Том 1623, стр. 451-454). American Institute of Physics Inc.. https://doi.org/10.1063/1.4898979