Impacts of friction stir processing on irradiation effects in vacuum-plasma-spray coated tungsten

Ozawa, Kazumi; Tanigawa, Hiroyasu; Morisada, Yoshiaki*; Fujii, Hidetoshi*

Reduced activation ferritic/martensitic steel, as typified by F82H, is a promising candidate for structural material of DEMO fusion reactors. To prevent plasma sputtering, tungsten (W) coating was essentially required. This study aims to examine the irradiation effects on hardness and microstructure of vacuum-plasma-spray coated W-F82H steel, with a special emphasis on the impacts of grain-refining induced by frictional stir processing (FSP). It was revealed that the hardness of the VPS-FSP W after ion-irradiation to 5.4 dpa at 800 $^{circ}$ C were not remarkably changed, where bulk W usually exhibited significant irradiation hardening.

Language	:	English
Journal	:	Fusion Engineering and Design
Volume	:	98-99
Number	:
Pages	:	p.2054 - 2057
Publication Year/Month	:	2015/10
Meeting title	:	28th Symposium on Fusion Technology (SOFT 2014)
Held date	:	2014/09
Location (city)	:	San Sebastin
Location (country)	:	Spain
Patent information	:
PDF	:
Paper URL	:	https://doi.org/10.1016/j.fusengdes.2015.06.104
DOI for research data	:
Keywords	:	F82H; tungsten; vacuum plasma spray; friction stir processing; ion irradiation
Research Facility	:	原型炉R\&D棟
Press Release	:
Article of JAEA R&D Review	:
Cooperating Institute	:	大阪大学接合科学研究所

Accesses	:	- Accesses
Web of Science® Times Cited Count	:	Times Cited Count： If you would like to get the latest times cited, please access the Web of Science®. http://www.webofknowledge.com/wos
InCites™	:	Percentile:9.74 Category:Nuclear Science & Technology
Altmetrics	:

Registration No. : BB20140764
JAEA Abstracts No. : 44000848
Paper Submission No. : 17514

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.