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@ARTICLE{Wang:904086,
author = {Wang, Zheng and Gao, Liang and Zhu, Xiu-Li and Yuan, Yue
and Wang, Shiwei and Cheng, Long and Lu, Guang-Hong},
title = {{E}ffect of rhenium on defects evolution behavior in
tungsten under irradiation},
journal = {Nuclear fusion},
volume = {61},
number = {3},
issn = {0029-5515},
address = {Vienna},
publisher = {IAEA},
reportid = {FZJ-2021-05656},
pages = {036037 -},
year = {2021},
abstract = {The influence of the transmutation element rhenium (Re) on
defect evolution in tungsten (W) during irradiations with
heavy ions and deuterium (D) plasma was investigated. Rolled
W and W–5Re alloy (Re concentration 5 $wt.\%)$ were
irradiated with 500 keV iron ions to 0.06 and 0.6 dpa
(displacement per atom), and deuterium plasma at 38 eV/D to
a fluence of 2.2 × 1025 D m−2 at ∼373 K. The results of
Doppler broadening spectroscopy by the positron annihilation
technique indicate that more or larger vacancy-type defects
were produced in W than in the W–5Re during Fe ion
irradiation, suggesting the important role of Re on
inhibiting the migration and/or clustering of vacancies. The
much smaller and shallower blistering in W–5Re than in W
after the same D plasma exposure points to the pinning
effects on dislocations by Re. The total retained D amounts
in W–5Re and W materials are comparable, but with very
different concentration profile at corresponding depth. This
is explained by the blister formation exerting influence on
the D inward diffusion. Demonstrating the important role of
Re on the defect evolution in W under irradiation, the
present work provides an enhanced understanding on the
possible effects of neutron irradiation on the performance
of plasma-facing materials in future fusion devices.},
cin = {IEK-4},
ddc = {620},
cid = {I:(DE-Juel1)IEK-4-20101013},
pnm = {134 - Plasma-Wand-Wechselwirkung (POF4-134)},
pid = {G:(DE-HGF)POF4-134},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000621485700001},
doi = {10.1088/1741-4326/abd920},
url = {https://juser.fz-juelich.de/record/904086},
}