Realizing a full volume component by in-situ welding during electron beam melting process

Wang, Pan1; Nai, Mui Ling Sharon1; Sin, Wai Jack1; Lu, Shenglu1; Zhang, Baicheng1; Bai, Jiaming1,2; Song, Jie1; Wei, Jun1

2018-08

10.1016/j.addma.2018.05.022

Additive Manufacturing   Impact Factor & Quartile

2214-8604

2214-7810

As one of the powder-bed-fusion additive manufacturing processes, electron beam melting (EBM) is able to produce metal parts directly. Many small volume components with high quality have been fabricated using the EBM technology. However, there are only few reports on the EBM fabrication of medium-sized components. One of the reasons is the lack of energy issue when the scan length is too long, which results in the generation of lack of fusion pores. This, in turn, drastically degrades the mechanical properties of the EBM printed parts. Here, we firstly report an in-situ welding process to overcome the lack of energy issue caused by the long scan length during EBM process. After the investigation of the corresponding microstructure, microhardness and tensile properties, it is revealed that the in-situ welding zone is fully joined and the mechanical properties of the in-situ welded part are comparable to that of the wrought counterpart. This implies that medium-sized components can be successfully fabricated using the EBM, with no compromise on the mechanical properties.

Additive manufacturing Metals and alloys Powder technology Welding Microstructure Mechanical properties

SCI ; EI

English

Others

A*STAR Additive Manufacturing Centre (AMC) Initiative: Work Package 1[1426800088]

Engineering ; Materials Science

Engineering, Manufacturing ; Materials Science, Multidisciplinary

WOS:000442170000043

ELSEVIER SCIENCE BV

20191306681593

3D printers ; Additives ; Electron beam melting ; Electron beams ; Mechanical properties ; Metallurgy ; Microstructure ; Powder metals ; Powder technology ; Tensile properties

Metallurgy:531.1 ; Welding:538.2 ; Printing Equipment:745.1.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Materials Science:951

Web of Science

1.Singapore Inst Mfg Technol, 73 Nanyang Dr, Singapore 637662, Singapore
2.South Univ Sci & Technol China, Dept Mech & Energy Engn, 1088 Xueyuan Rd, Shenzhen 518055, Guangdong, Peoples R China

Wang, Pan,Nai, Mui Ling Sharon,Sin, Wai Jack,et al. Realizing a full volume component by in-situ welding during electron beam melting process[J]. Additive Manufacturing,2018,22:375-380.

Wang, Pan.,Nai, Mui Ling Sharon.,Sin, Wai Jack.,Lu, Shenglu.,Zhang, Baicheng.,...&Wei, Jun.(2018).Realizing a full volume component by in-situ welding during electron beam melting process.Additive Manufacturing,22,375-380.

Wang, Pan,et al."Realizing a full volume component by in-situ welding during electron beam melting process".Additive Manufacturing 22(2018):375-380.