Peculiarities of helium porosity formation in the surface layer of the structural materials used for the first wall of fusion reactor
- 作者: Chernov I.1, Stal’tsov M.1, Kalin B.1, Bogachev I.1, Guseva L.1
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隶属关系:
- National Research Nuclear University MEPhI
- 期: 卷 2016, 编号 3 (2016)
- 页面: 193-197
- 栏目: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/170377
- DOI: https://doi.org/10.1134/S0036029516030058
- ID: 170377
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详细
Transmission electron microscopy is used to study the formation of helium porosity in the nearsurface layer of ferritic–martensitic steels and vanadium irradiated by 40-keV He+ ions at a temperature of 923 K up to fluence of 5 × 1020 He+/m2 and, then, by 7.5-MeV Ni2+ ions at 923 K up to dose of 100 dpa. Large gas bubbles are found to form in the zone with the maximum concentration of radiation vacancies during He+ ion irradiation. Moreover, small bubbles form in some grains at the depths that are larger than the He+ ion range in the irradiated material. Sequential irradiation by He+ and Ni2+ ions leads to the nucleation of helium bubbles at still larger depths due to helium atom transport via recoil and/or ion mixing. The precipitation hardening of the steels by Y2O3 oxide nanoparticles is found to suppress helium swelling substantially.
作者简介
I. Chernov
National Research Nuclear University MEPhI
编辑信件的主要联系方式.
Email: i_chernov@mail.ru
俄罗斯联邦, Kashirskoe sh. 31, Moscow, 115409
M. Stal’tsov
National Research Nuclear University MEPhI
Email: i_chernov@mail.ru
俄罗斯联邦, Kashirskoe sh. 31, Moscow, 115409
B. Kalin
National Research Nuclear University MEPhI
Email: i_chernov@mail.ru
俄罗斯联邦, Kashirskoe sh. 31, Moscow, 115409
I. Bogachev
National Research Nuclear University MEPhI
Email: i_chernov@mail.ru
俄罗斯联邦, Kashirskoe sh. 31, Moscow, 115409
L. Guseva
National Research Nuclear University MEPhI
Email: i_chernov@mail.ru
俄罗斯联邦, Kashirskoe sh. 31, Moscow, 115409