Structural changes in elastically stressed crystallites under irradiation

Structural changes in elastically stressed crystallites under irradiation

Podrobná bibliografie
Parent link:Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms: Scientific Journal.— , 1984-
Vol. 352 : Computer Simulation of Radiation Effects in Solids.— 2015.— [P. 43-46]
Korporativní autor: Национальный исследовательский Томский политехнический университет (ТПУ) Институт физики высоких технологий (ИФВТ) Кафедра физики высоких технологий в машиностроении (ФВТМ) Сетевая научно-образовательная лаборатория "Медицинское материаловедение" (СНОЛ ММ)
Další autoři: Zolnikov K. P. Konstantin Petrovich, Korchuganov A. V. Aleksandr Vyacheslavovich, Kryzhevich D. S. Dmitry Sergeevich, Chernov V. M. Vladimir Mikhaylovich, Psakhie S. G. Sergey Grigorievich
Shrnutí:Title screen
The response of elastically stressed iron and vanadium crystallites to atomic displacement cascades was investigated by molecular dynamics simulation. Interatomic interaction in vanadium was described by a many-body potential calculated in the Finnis–Sinclair approximation of the embedded atom method. Interatomic interaction in iron was described by a many-body potential constructed in the approximation of valence-electron gas. The crystallite temperature in the calculations was varied from 100 to 600 K. The elastically stressed state in the crystallites was formed through uniaxial tension by 4–8% such that their volume remained unchanged. The energy of a primary knock-on atom was varied from 0.5 to 50 keV. It is shown that the lower the temperature and the higher the strain degree of an initial crystallite, the lower the threshold primary knock-on atom energy for plastic deformation generation in the crystallite. The structural rearrangements induced in the crystallites by an atomic displacement cascade are similar to those induced by mechanical loading. It is found that the rearrangements are realized through twinning.
Режим доступа: по договору с организацией-держателем ресурса
Jazyk:angličtina
Vydáno: 2015
Témata:
электронный ресурс
труды учёных ТПУ
атомные смещения
ударные волны
молекулярная динамика
радиационные дефекты
On-line přístup:http://dx.doi.org/10.1016/j.nimb.2015.01.029
Médium: Elektronický zdroj Kapitola
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=645762

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