Thermal desorption was used to study the behavioral particulars of the ion-implanted at 20 and 650°C helium in reactor ferrite-martensite EP-450, Eurofer-97, dispersion-hardened EP-450, Eurofer-97, and EK-164 austenitic steel. It is established that compared with the thermal desorption spectrum of EP-450 and Euroffer-97 steel the temperature interval for helium release from dispersion-hardened EP-450 and Eurofer 97 steels is wider for helium implantation at room temperature and especially at 650°C. In steel hardened by disperse oxides Y2O3, a substantial amount of helium is released at high temperatures after the main maximum in the thermal desorption spectrum as a result of the formation at the incoherent particle–matrix boundary of bubbles with high bonding energy with particles. In contrast to the ferrite-martensite steel irradiated in the temper state, the thermal desorption spectrum of EK-164 austenitic steel is more complex because of the multiple stage helium release due to the structural defects introduced by cold deformation.
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Translated from Atomnaya Énergiya, Vol. 110, No. 3, pp. 130–137, March, 2011.
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Oo, K.Z., Chernov, I.I., Staltsov, M.S. et al. Thermal desorption of helium from reactor steel. At Energy 110, 151–159 (2011). https://doi.org/10.1007/s10512-011-9404-6
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DOI: https://doi.org/10.1007/s10512-011-9404-6