A prospect of using ternary W-5 wt%V-5 wt%Ta alloy manufactured by mechanical alloying and spark plasma sintering as plasma-facing material

被引:14
作者
Cui, Hongjing [1 ]
Liu, Ning [1 ]
Luo, Laima [1 ]
Xu, Yue [1 ]
Cheng, Jigui [1 ]
Wu, Yucheng [1 ]
机构
[1] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Peoples R China
基金
中国国家自然科学基金;
关键词
Metals and alloys; Mechanical properties; Microstructure; Radiation effects; TUNGSTEN; IRRADIATION; TANTALUM; VANADIUM; HELIUM; MICROSTRUCTURE; TEMPERATURE; STABILITY; DEUTERIUM; BEHAVIOR;
D O I
10.1016/j.jallcom.2022.163899
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
For ensuring W employed as the armor of the divertor component in International Thermonuclear Experimental Reactor, a ternary W alloy W-5 wt%V-5 wt%Ta was manufactured by mechanical alloying and spark plasma sintering. (V, Ta)-enriched fine grains and W-enriched grains were observed in W-5 wt%V-5 wt%Ta with a single-phase body centered cubic structure. W-5 wt%V-5 wt%Ta has an ultrafine grain size, and higher relative density, microhardness, and strength than the pure W. The strenghening mechanisms were estimated, and the results indicate that grain refinement, densification, and solid solution play the main, secondary and small strengthening roles, respectively. W-5 wt%V-5 wt%Ta has a good irradiation resistance. This good irradiation resistance has a relationship with the ultrafine grains as well as higher compressive and tensile strength of W-5 wt%V-5 wt%Ta. The damage of irradiation was quantitatively analyzed by the 3D laser scanning confocal microscope. This research work suggests that W-5 wt%V-5 wt %Ta can be applied as a potential plasma-facing material. (c) 2022 Elsevier B.V. All rights reserved.
引用
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页数:11
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