The Microstructure and Mechanical Properties of High-Strength 2319 Aluminum Alloys Fabricated by Wire Double-Pulsed Metal Inert Gas Arc Additive Manufacturing

doi:10.1007/s11665-022-07209-1

	The Microstructure and Mechanical Properties of High-Strength 2319 Aluminum Alloys Fabricated by Wire Double-Pulsed Metal Inert Gas Arc Additive Manufacturing
	Huang, Zhongli; Huang, Jiankang; Yu, Xiaoquan; Liu, Guangyin; Fan, Ding
刊名	Journal of Materials Engineering and Performance
	2022
关键词	3D printers Additives Aluminum alloys Ductile fracture Fabrication High strength alloys Horizontal wells Inert gases Scanning electron microscopy Tensile strength Textures 2319 aluminum alloy Fracture surfaces High-strength Low-frequency pulse Lower frequencies Metal inert gas Microstructures and mechanical properties Pulse frequencies Wire and arc additive manufacturing Wire arc
ISSN号	1059-9495
DOI	10.1007/s11665-022-07209-1
英文摘要	Using double-pulsed melt inert-gas welding (DP-MIG)-based wire arc additive manufacturing (WAAM), the 2319 aluminum alloy components were fabricated with different pulse frequencies. The low-frequency pulses with 1, 3 and 5 Hz were used to deposit thin-wall parts. The scanning electron microscopy (SEM) and optical microscopy (OM) were used to observe the microstructure and fracture surface; the EDS was performed to identify the precipitation phase. The tensile properties were carried out along vertical direction and horizontal direction. The results show that the θ and θ′ phases were found in the deposition part. As the low frequency increases, the equiaxed size in the inner layer region decreases and promoted the precipitation of the θ phase. By changing the low-frequency pulse from 1 to 3 Hz, the ultimate tensile strengths and the elongations in the horizontal as well as vertical the directions increase by 25.67, 19.46 MPa, 0.36 and 4.59%, respectively. The maximum tensile strength reached 253.18 MPa when the pulse frequency was 3 Hz. A large number of dimples were observed on the fracture surface for different pulse frequencies, indicating that the fracture modes of different frequencies were mainly ductile fracture. © 2022, ASM International.
WOS研究方向	Materials Science
语种	英语
出版者	Springer
WOS记录号	WOS:000844904200002
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159759]
专题	材料科学与工程学院
作者单位	School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Huang, Zhongli,Huang, Jiankang,Yu, Xiaoquan,et al. The Microstructure and Mechanical Properties of High-Strength 2319 Aluminum Alloys Fabricated by Wire Double-Pulsed Metal Inert Gas Arc Additive Manufacturing[J]. Journal of Materials Engineering and Performance,2022.
APA	Huang, Zhongli,Huang, Jiankang,Yu, Xiaoquan,Liu, Guangyin,&Fan, Ding.(2022).The Microstructure and Mechanical Properties of High-Strength 2319 Aluminum Alloys Fabricated by Wire Double-Pulsed Metal Inert Gas Arc Additive Manufacturing.Journal of Materials Engineering and Performance.
MLA	Huang, Zhongli,et al."The Microstructure and Mechanical Properties of High-Strength 2319 Aluminum Alloys Fabricated by Wire Double-Pulsed Metal Inert Gas Arc Additive Manufacturing".Journal of Materials Engineering and Performance (2022).