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Microstructure and mechanical properties of similar and dissimilar joints of RAFM and 316L by electron beam welding
Fan Xiaosong1,3; Shen Xu2,4; Zhang Yong2; Liu Zhihong2; Wu Jiefeng2; Liu Zhenfei2; Ma Jianguo2
2021
Source PublicationFUSION ENGINEERING AND DESIGN
ISSN0920-3796
Corresponding AuthorFan Xiaosong(fan@ipp.ac.cn)
Abstract316L is a structural material used in fusion reactor vacuum vessels (VVs), in-vessel component supports, and cooling pipes, while reduced-activation ferritic/martensitic (RAFM) steel is the structural material used in test blanket modules (TBMs). High-energy electron beam welding is a suitable method for welding RAFM/316L joints. To explore the electron beam welding process of RAFM/316L, 150 kV/39 mA are chosen as the welding parameters to connect the dissimilar materials, and the microstructure and mechanical properties of the joint are tested and analyzed after welding. The results demonstrate a magnetic deflection of the 316L/RAFM welding joint due to phase change. Thus, an electron beam shift is made to compensate for this deflection. Microstructural observations indicate that the weld metal (WM) of RAFM/316L comprises lath martensite and a small amount of ferrite. The RAFM heat-affected zone (HAZ) of RAFM/316L can be divided into three regions: a fusion zone comprising coarse ferrite and martensite, a completely quenched zone comprising quenched martensite, and an incompletely quenched zone comprising eutectic ferrite and quenched martensite. Mechanical property test results indicate that the WM of RAFM/316L is better than the 316L base material and WM of 316L/316L in terms of tensile strength, and the top of the RAFM/316L joint is comparable to, but with a weaker bottom, than that of the 316L and RAFM base materials in terms of impact toughness.
KeywordRAFM Electron beam welding Microstructure Mechanical properties
DOI10.1016/j.fusengdes.2020.112130
WOS KeywordFERRITIC-MARTENSITIC STEELS ; EVOLUTION ; PROGRESS ; DESIGN
Indexed BySCI
Language英语
Funding ProjectComprehensive Research Facility for Fusion Technology Program of China[2018-000052-73-01-001228] ; China National Magnetic Confinement Fusion Science Program[2015GB107000] ; Shenzhen Clean Energy Research Institute
Funding OrganizationComprehensive Research Facility for Fusion Technology Program of China ; China National Magnetic Confinement Fusion Science Program ; Shenzhen Clean Energy Research Institute
WOS Research AreaNuclear Science & Technology
WOS SubjectNuclear Science & Technology
WOS IDWOS:000603550400001
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/119996
Collection中国科学院合肥物质科学研究院
Corresponding AuthorFan Xiaosong
Affiliation1.Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
3.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China
4.Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Peoples R China
Recommended Citation
GB/T 7714
Fan Xiaosong,Shen Xu,Zhang Yong,et al. Microstructure and mechanical properties of similar and dissimilar joints of RAFM and 316L by electron beam welding[J]. FUSION ENGINEERING AND DESIGN,2021,162.
APA Fan Xiaosong.,Shen Xu.,Zhang Yong.,Liu Zhihong.,Wu Jiefeng.,...&Ma Jianguo.(2021).Microstructure and mechanical properties of similar and dissimilar joints of RAFM and 316L by electron beam welding.FUSION ENGINEERING AND DESIGN,162.
MLA Fan Xiaosong,et al."Microstructure and mechanical properties of similar and dissimilar joints of RAFM and 316L by electron beam welding".FUSION ENGINEERING AND DESIGN 162(2021).
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