Changes in structure of the surface and edges of beryllium plates as a result of thermal cycling tests
Skakov M.K. Sokolov I.A. Miniyazov A.Z. Tulenbergenov T.R. Sapatayev Y.Y. Orazgaliyev N.A. Bukina O.S.
October 2022Elsevier Ltd
Fusion Engineering and Design
2022#183
In this paper, experiments were conducted on the thermal effect of an electron beam on beryllium of the TGP-56 grade in vacuum, at the values of the surface temperature of beryllium ∼360, ∼800 and ∼1200 °C with the number of pulses 10 and 100 with the same pulse duration – 500 s. A complex of material research such as microanalysis, x-ray diffraction analysis, determination of microhardness was conducted. The experimental data on changes in mechanical properties and melting conditions of beryllium at the boundary between gaps of the plates of the ITER first wall as a result of heat loads were obtained. It was found that in the normal operation mode of ITER (2.0–4.7 MW) the edges of beryllium have good resistance to spraying. Under critical conditions, closer to the melting point, beryllium is strongly sprayed.
Beryllium , Fusion , Heat load , ITER , Plasma , Tokamak
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National Nuclear Center of the Republic of Kazakhstan, Kurchatov, Kazakhstan
Institute of Atomic Energy Branch of National Nuclear Center of the Republic of Kazakhstan, Krasnoarmeysaya st.10, Kurchatov, 071100, Kazakhstan
National Nuclear Center of the Republic of Kazakhstan
Institute of Atomic Energy Branch of National Nuclear Center of the Republic of Kazakhstan
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