Synergy of plastic deformation and gas retention in tungsten

D. Terentyev, G. De Temmerman, B. Minov, Y. Zayachuk, K. Lambrinou, T. W. Morgan, A. Dubinko, K. Bystrov, G. Van Oost

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


Taking the example of tungsten, we demonstrate that high-flux plasma exposure of recrystallized and plastically deformed samples leads to principal differences in the gas trapping and associated surface modification. Surface of the exposed pre-deformed samples exhibits ruptured μm-sized blisters, a signature of bubbles nucleated close to the surface on the plastically induced dislocation network. Contrary to the recrystallized samples, no stage attributable to gas bubbles appeared in the desorption spectrum of the deformed samples demonstrating the strong impact of dislocations on hydrogen retention.

Original languageEnglish
Article number013007
JournalNuclear Fusion
Issue number1
Early online date1 Dec 2014
Publication statusPublished - 1 Jan 2015
Externally publishedYes


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