Synergy of plastic deformation and gas retention in tungsten

TitleSynergy of plastic deformation and gas retention in tungsten
Publication TypeJournal Article
Year of Publication2015
AuthorsD. Terentyev, G. De Temmerman, B. Minov, Y. Zayachuk, K. Lambrinou, T.W Morgan, A. Dubinko, K. Bystrov, G. Van Oost
JournalNuclear Fusion
Volume55
Issue1
Pagination013007
Abstract

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 µ m-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.

DOI10.1088/0029-5515/55/1/013007
Division

PSI

Department

PSI-E

PID

6c14ad904e8341aeaa4ed3c17bb8625a

Alternate TitleNucl. Fusion

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