期刊
SCRIPTA MATERIALIA
卷 107, 期 -, 页码 96-99出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2015.05.029
关键词
Helium ion-implantation; X-ray micro-diffraction; Tungsten; Lattice swelling; Eigenstrain analysis
类别
资金
- OUP John Fell Fund [122/643]
- U.S. DoE [DE-AC02-06CH11357]
- Euratom research and training programme [633053]
- UK EPSRC [EP/H018921]
- EPSRC [EP/H018921/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/H018921/1] Funding Source: researchfish
Using synchrotron X-ray micro-diffraction and Eigenstrain analysis the distribution of lattice swelling near grain boundaries in helium-implanted polycrystalline tungsten is quantified. Samples heat-treated at up to 1473 K after implantation show less uniform lattice swelling that varies significantly from grain to grain compared to as-implanted samples. An increase in lattice swelling is found in the vicinity of some grain boundaries, even at depths beyond the implanted layer. These findings are discussed in terms of the evolution of helium-ion-implantation-induced defects. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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