4.7 Article

Helium bubble nucleation and growth in alloy HT9 through the use of in situ TEM: Sequential he-implantation and heavy-ion irradiation versus dual-beam irradiation

Journal

JOURNAL OF NUCLEAR MATERIALS
Volume 545, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.jnucmat.2020.152641

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Funding

  1. FUTURE (Fundamental Understanding of Transport Under Reactor Extremes), an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Basic Energy Sciences
  2. State of North Carolina
  3. National Science Foundation [ECCS-1542015]
  4. French Accelerator Network EMIR for Materials and Irradiation studies [17-2051]

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The formation of helium bubbles in Ferritic/Martensitic steel HT9 was investigated through in situ Transmission Electron Microscopy combined with helium implantation and heavy ion irradiation. The study focused on the effect of increasing helium appm/dpa ratio on the formation and growth of the bubbles, as well as the sequential order of ion irradiation.
The formation of He bubbles in Ferritic/Martensitic steel HT9 is investigated through the use of in situ Transmission Electron Microscopy coupled with He implantation and heavy ion irradiation. Of particular interest is the effect of increasing He appm/dpa ratio on the formation and growth of the bubbles, as well as the effect of the sequential order of ion irradiation i.e. He-pre-implantation followed by heavy-ion irradiation versus true dual-beam irradiation. The role of He is discussed. (C) 2020 Elsevier B.V. All rights reserved.

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