Microstructure and Mechanical Properties of Additive Manufactured 2319 Alloy by Electron Beam Freeform Fabrication

doi:10.11900/0412.1961.2018.00052

IMR OpenIR

	Microstructure and Mechanical Properties of Additive Manufactured 2319 Alloy by Electron Beam Freeform Fabrication
	Yu Jing 1,2; Wang Jijie 2; Ni Dingrui 1; Xiao, Bolv 1; Ma Zongyi 1; Pan Xinglong 3
通讯作者	Ni Dingrui(drni@imr.ac.cn)
	2018-12-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	54 期号:12 页码:1725-1734
摘要	Aluminum 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.
关键词	Al alloy additive manufacturing (AM) electron beam freeform fabrication (EBF3) microstructure mechanical property
资助者	Pre-Research Project on Manned Spaceflight
DOI	10.11900/0412.1961.2018.00052
收录类别	SCI
语种	英语
资助项目	Pre-Research Project on Manned Spaceflight[030302]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000454455600002
出版者	SCIENCE PRESS
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/131060
专题	中国科学院金属研究所
通讯作者	Ni Dingrui
作者单位	1.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
推荐引用方式 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.