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Determination of interface toughness of functionally graded tungsten/EUROFER multilayer at 550 degrees C by analytical and experimental methods
Qu DD(屈丹丹)1,2; Gaganidze E1; Vassen R3; Aktaa J1
Source PublicationENGINEERING FRACTURE MECHANICS
2018-10-15
Volume202Pages:487-499
ISSN0013-7944
Abstract

As armor coating, functionally graded (FG) tungsten/EUROFER multilayer was sprayed on EUROFER substrate for First Wall application in fusion field. Interface toughness between FG tungsten/EUROFER multilayer and EUROFER substrate was studied innovatively by a simple method based on the beam theory in this paper. To quantify interface toughness, the energy release rate was assessed by performing three and four-point bending tests on pre-cracked specimens at 550 degrees C and under high vacuum. The energy release rate during propagating of interfacial crack was determined to be 258 J/m(2) and 225 J/m(2) analytically and experimentally for samples with 3 and 5 layers as FG-layer, respectively, which were calculated based on multi bending tests. Cross-section and fracture microstructure show a vast of plasticity in FG-layer, particularly in FG-layer with a higher volume ratio of EUROFER. Interfacial fracture microstructure indicates interface adhesion consists of mechanical interlocking and metallurgical bonding.

KeywordFg Tungsten/eurofer Multilayer Interface Toughness Bending Test Energy Release Rate
DOI10.1016/j.engfracmech.2018.09.016
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000449274300032
WOS KeywordIsogeometric Analysis ; Fracture-behavior ; Residual-stresses ; Coating System ; Plate-theory ; Crack ; Predictions ; Composites ; Blanket ; Model
WOS Research AreaMechanics
WOS SubjectMechanics
Funding OrganizationEuratom research and training programme 2014-2018 [633053]
Classification二类/q1
Ranking1
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78129
Collection先进制造工艺力学重点实验室
Affiliation1.Karlsruhe Inst Technol, Inst Appl Mat, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany
2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
3.Forschungszentrum Julich, Inst Energy & Climate Res IEK 1, Julich, Germany
Recommended Citation
GB/T 7714
Qu DD,Gaganidze E,Vassen R,et al. Determination of interface toughness of functionally graded tungsten/EUROFER multilayer at 550 degrees C by analytical and experimental methods[J]. ENGINEERING FRACTURE MECHANICS,2018,202:487-499.
APA Qu DD,Gaganidze E,Vassen R,&Aktaa J.(2018).Determination of interface toughness of functionally graded tungsten/EUROFER multilayer at 550 degrees C by analytical and experimental methods.ENGINEERING FRACTURE MECHANICS,202,487-499.
MLA Qu DD,et al."Determination of interface toughness of functionally graded tungsten/EUROFER multilayer at 550 degrees C by analytical and experimental methods".ENGINEERING FRACTURE MECHANICS 202(2018):487-499.
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