中文版 | English
Title

Nanocrystalline W-based alloys with ultrahigh hardness and exceptional irradiation tolerance

Author
Corresponding AuthorJin, C. Q.; Wang, P.; Fu, E. G.
Publication Years
2019-10
DOI
Source Title
ISSN
0029-5515
EISSN
1741-4326
Volume59Issue:10
Abstract
Nanocrystalline W-5 wt.% Y2O3 (WYO) with an average grain size of 10 nm and W-5 wt.% Y2O3-2.5 wt.% Ni (WYON) with an average grain size of 85 nm were successfully fabricated for the first time using a high-energy ball-milling method followed by a resistance sintering under ultrahigh pressure (RSUHP) technique. Investigation of the microstructure of sintered WYO shows that the intergranular doping of Y2O3 grains inhibits the grain growth of W, and investigation of the microstructure of sintered WYON shows that the addition of Ni atoms leads to the grain growth and density increase. The Vickers hardness of sintered WYO and sintered WYON is much higher than that of ITER grade W. The He bubble areal density and swelling of WYO and WYON are much lower than those of ITER grade W, indicating that WYO and WYON possess exceptional higher irradiation tolerance in terms of He ion damage than coarse-grained ITER grade W. This study demonstrates the promising applications of nanocrystallined W-based alloys as plasma-facing materials (PFMs) due to their ultrahigh hardness and excellent radiation tolerance.
Keywords
URL[Source Record]
Indexed By
SCI ; EI
Language
English
Funding Project
Foundation of China (NSFC)[11575288] ; Foundation of China (NSFC)[51402350] ; Foundation of China (NSFC)[11375018] ; Foundation of China (NSFC)[11528508]
WOS Research Area
Physics
WOS Subject
Physics, Fluids & Plasmas
WOS Accession No
WOS:000485674000001
Publisher
EI Accession Number
20193907480622
EI Keywords
Ball milling ; Grain boundaries ; Grain growth ; Grain size and shape ; Helium ; Irradiation ; Nanocrystals ; Nickel ; Sintering ; Swelling ; Textures ; Tungsten alloys ; Vickers hardness
ESI Classification Code
Tungsten and Alloys:543.5 ; Nickel:548.1 ; Nanotechnology:761 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Crystal Growth:933.1.2 ; Materials Science:951
SUSTech Authorship
Others
ESI Research Field
PHYSICS
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:3
Document TypeJournal Article
Identifierhttps://kc.sustech.edu.cn/handle/2SGJ60CL/25133
DepartmentDepartment of Physics
Affiliation
1.Peking Univ, Sch Phys, State Key Lab Nucl Phy & Technol, Beijing 100871, Peoples R China
2.Ctr High Pressure Sci & Technol Adv Res HPSTAR, Beijing 100094, Peoples R China
3.Xiamen Univ, Coll Energy, Xiamen 361100, Fujian, Peoples R China
4.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
5.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
6.Chinese Acad Sci, Lanzhou Inst Chem Phys, Lanzhou 730000, Gansu, Peoples R China
Recommended Citation
GB/T 7714
Wu, Z. M.,Zhang, J.,Huang, J. C.,et al. Nanocrystalline W-based alloys with ultrahigh hardness and exceptional irradiation tolerance[J]. NUCLEAR FUSION,2019,59(10).
APA
Wu, Z. M..,Zhang, J..,Huang, J. C..,Fan, Y..,Yu, X. H..,...&Fu, E. G..(2019).Nanocrystalline W-based alloys with ultrahigh hardness and exceptional irradiation tolerance.NUCLEAR FUSION,59(10).
MLA
Wu, Z. M.,et al."Nanocrystalline W-based alloys with ultrahigh hardness and exceptional irradiation tolerance".NUCLEAR FUSION 59.10(2019).
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