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Microstructure and Mechanical Properties of Additive Manufactured 2319 Alloy by Electron Beam Freeform Fabrication
Yu Jing1,2; Wang Jijie2; Ni Dingrui1; Xiao, Bolv1; Ma Zongyi1; Pan Xinglong3
Corresponding AuthorNi Dingrui(drni@imr.ac.cn)
2018-12-11
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume54Issue:12Pages:1725-1734
AbstractAluminum alloys have the advantages of light weight and high strength, and they are important structural materials in aerospace field. The additive manufacturing technology of aluminum alloys has a potential application prospect in the field of on-orbit manufacturing in the future, and the technology of electron beam fuse deposition is the best process selection due to its unique technical advantages. In the present study, 2319 aluminum alloy wires with diameter of 2 mm were used for additive manufacturing (AM) by electron beam freeform fabrication (EBF3), with a sample of 150 mm x 35 mm x 52 mm being printed. The microstructure and mechanical properties of the printed sample in three directions were investigated. The results showed that bulk materials of the 2319 alloy can be printed without macroscopic defects under selective EBF3 parameters, with a relative density of 99.3% compared to the initial wires. The average grain size of the printed sample was less than 10 mm, containing primary Al2Cu phases, fine particles, and coarse impurity phases. There are some tiny voids in the printed sample, and the sizes of the voids are 5 similar to 15 mm. The ultimate tensile strengths of the printed sample were 161, 174 and 167 MPa in the length, width and height directions. After a T6 treatment, the coarse phase were basically dissolved and some finer phases were re-precipitated. Due to the dominant effect of dispersion strengthening, the mechanical properties of the sample were significantly improved, and the ultimate tensile strengths of the sample in three directions were increased to 423, 495, and 421 MPa, respectively.
KeywordAl alloy additive manufacturing (AM) electron beam freeform fabrication (EBF3) microstructure mechanical property
Funding OrganizationPre-Research Project on Manned Spaceflight
DOI10.11900/0412.1961.2018.00052
Indexed BySCI
Language英语
Funding ProjectPre-Research Project on Manned Spaceflight[030302]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000454455600002
PublisherSCIENCE PRESS
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/131060
Collection中国科学院金属研究所
Corresponding AuthorNi Dingrui
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
2.Shenyang Aerosp Univ, Coll Mat Sci & Engn, Shenyang 110036, Liaoning, Peoples R China
3.Guilin THD Mech & Elec Engn Co Ltd, Guilin 541004, Peoples R China
Recommended Citation
GB/T 7714
Yu Jing,Wang Jijie,Ni Dingrui,et al. Microstructure and Mechanical Properties of Additive Manufactured 2319 Alloy by Electron Beam Freeform Fabrication[J]. ACTA METALLURGICA SINICA,2018,54(12):1725-1734.
APA Yu Jing,Wang Jijie,Ni Dingrui,Xiao, Bolv,Ma Zongyi,&Pan Xinglong.(2018).Microstructure and Mechanical Properties of Additive Manufactured 2319 Alloy by Electron Beam Freeform Fabrication.ACTA METALLURGICA SINICA,54(12),1725-1734.
MLA Yu Jing,et al."Microstructure and Mechanical Properties of Additive Manufactured 2319 Alloy by Electron Beam Freeform Fabrication".ACTA METALLURGICA SINICA 54.12(2018):1725-1734.
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