A Study on the 2060-T8/2099-T83 Aluminum-Lithium Alloys T-Joints Welded by Double-Sided Laser Beam Welding

Tan, Jie; Liu, Hongbing; Zhang, Peilei; Yu, Zhishui; Shi, Haichuan; Li, Shaowei; Wu, Di; Yan, Hua; Ye, Xin; Wang, Fuxin; Wei, Xingru; Jiang, Qi–Chuan; Deng, Jingyu

doi:10.1007/s11665-020-04967-8

Cited by 5 publications

(2 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The welding head and the wire feeding system on both sides were relatively stationary to achieve stable control during the simultaneous dual laser beam welding process. The specific device and process of the welding were described in the former literature [19]. The welding structure was T-joint with skin and stringer materials.…”

Section: Experimental Materials and Methodsmentioning

confidence: 99%

Microstructure Analysis and Fatigue Behavior of Laser Beam Welding 2060-T8/2099-T83 Aluminum–Lithium Alloys

et al. 2021

Self Cite

View full text Add to dashboard Cite

In this paper, the microstructure analysis and performance research of dual laser beam welded 2060-T8/2099-T83 aluminum–lithium alloys were carried out. First, the macroscopic morphology and microstructure characteristics of T-joint aluminum–lithium alloys under different welding conditions were observed. Then the effect of welding parameters and pore defects on tensile and fatigue properties of the weld were carried out and the experimental results were analyzed. It was found that the weld heat input has a significant influence on the penetration of the welded aluminum–lithium alloys joint. When the laser power is too high, the weld will absorb more laser energy and the increase in the evaporation of magnesium will further increase the weld penetration. When the penetration depth increases, the transverse tensile strength tends to decrease. There is no obvious rule for the effect of pore defects on the tensile strength of the weld. At the same time, the heat input of the weld is inversely proportional to the porosity. When the weld heat input increases from 19.41 to 23.33 kJ/m, the porosity decreases from 5.35% to 2.08%. During the fatigue test, it was confirmed that the existence of pore defects would reduce the fatigue life of the weld. In addition, from the analysis of the fatigue fracture morphology it can be found that when the porosity is low, the weld toe is the main source of fatigue cracks. The crack propagation zone shows a typical beach pattern and the final fracture of the base metal presents the characteristics of a brittle fracture. While, when the porosity is high, the crack source is mainly located at the pore defects. T-joint fractures from the inside of the weld and the fracture in the final fracture zone have obvious pore defects and dimples.

show abstract

Section: Experimental Materials and Methodsmentioning

confidence: 99%

Microstructure Analysis and Fatigue Behavior of Laser Beam Welding 2060-T8/2099-T83 Aluminum–Lithium Alloys

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…It was manifested that lower welding speed and positive offset of focal length led to deeper penetration, thus improving the welding quality. Tan et al [19] analysed the mechanical properties of aluminium alloy T-joints. The transverse tensile properties of the welded joint were greatly affected by welding penetration, and the weak area was located in the non-dendritic equiaxed zone (EQZ) near the bottom fusion line.…”

Section: Introductionmentioning

confidence: 99%

Effect of laser power on the grain morphology and microhardness of dual laser-beam bilateral synchronous welded 2219 aluminium alloy T-joint

Zhao

Wang

et al. 2021

Science and Technology of Welding and Joining

View full text Add to dashboard Cite

Dual laser-beam bilateral synchronous welding (DLBSW) technology has been widely used in the connection of skin-stringer T-joint. In this study, DLBSW technology was performed to fabricate T-joint of 2219 aluminium alloy. Furthermore, the effect of laser power on grain morphology and microhardness of the T-joint was investigated. The microstructure of different parts was observed and the grain size was quantitatively analysed. The results show that the grain quantity and microhardness of the welded joint are increased significantly as the welding heat input increases. It is found that the influence of laser power on the grain size at the edge of the weld seam is greater than that in the centre of weld. Besides, the microhardness of the non-dendritic equiaxed zone decreases with the increase of laser power, which is caused by the decrease of Al element.

show abstract

Joint Strengthening Mechanism in Electron Beam Welding of Al/Cu Bilayer Laminated Composite Using Double-Sided Method

Xiao

et al. 2021

J. of Materi Eng and Perform

View full text Add to dashboard Cite

A Study on the 2060-T8/2099-T83 Aluminum-Lithium Alloys T-Joints Welded by Double-Sided Laser Beam Welding

Cited by 5 publications

References 23 publications

Microstructure Analysis and Fatigue Behavior of Laser Beam Welding 2060-T8/2099-T83 Aluminum–Lithium Alloys

Microstructure Analysis and Fatigue Behavior of Laser Beam Welding 2060-T8/2099-T83 Aluminum–Lithium Alloys

Effect of laser power on the grain morphology and microhardness of dual laser-beam bilateral synchronous welded 2219 aluminium alloy T-joint

Joint Strengthening Mechanism in Electron Beam Welding of Al/Cu Bilayer Laminated Composite Using Double-Sided Method

Contact Info

Product

Resources

About