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

被引:0
作者
Jie Tan
Hongbing Liu
Peilei Zhang
Zhishui Yu
Haichuan Shi
Shaowei Li
Di Wu
Hua Yan
Xin Ye
Fuxin Wang
Xingru Wei
Qi Jiang
Jingyu Deng
机构
[1] Shanghai University of Engineering Science,School of Materials Engineering
[2] Shanghai Collaborative Innovation Center of Laser of Manufacturing Technology,undefined
[3] Shanghai Aircraft Manufacturing Co. LTD,undefined
来源
Journal of Materials Engineering and Performance | 2020年 / 29卷
关键词
aluminum-lithium alloys; double-laser; laser welding; mechanical property; T-joint;
D O I
暂无
中图分类号
学科分类号
摘要
The mechanical properties of 2060 and 2099 T-joints welded by double-sided laser beam welding were analyzed in this experiment. Various mechanical tests were performed to determine the transverse tensile properties of the region perpendicular to the weld, the tensile properties of the skin and stringer, the compressive properties of the region parallel to the weld seam, and the fatigue properties perpendicular to the weld seam. The T-joint was found to consist of the base metal, partial melting zone, equiaxed zone (EQZ), columnar crystal zone, and cellular dendritic zone from the base metal to the center of the weld seam. The EQZ was proved to be the weak area during mechanical properties tests of the T-joint. Moreover, the welding penetration had a great influence on the transverse tensile properties and weak areas were located in the EQZ near the lower fusion line. The EQZ near the upper fusion line was the weak area in the process of compression. In addition, severe porosities and cracks greatly influenced the mechanical properties of the joint. The fatigue property was closely related to the deformation angle; the fatigue source was located at the weld toe, and the crack propagation was along the base metal.
引用
收藏
页码:4295 / 4309
页数:14
相关论文
共 102 条
[1]  
Mendez PF(2001)Welding Processes for Aeronautics Adv. Mater. Process. 159 39-43
[2]  
Eagar TW(2006)Assessment of Fracture and Fatigue Crack Propagation of Laser Beam and Friction Stir Welded Aluminium and Magnesium Alloys Adv. Eng. Mater. 8 399-406
[3]  
Vaidya WV(2012)Influence of the Local Chemical Composition on the Mechanical Properties of Laser Beam Welded Al-Li Alloys Phys. Procedia 39 51-58
[4]  
Horstmann M(2012)A Preliminary Structural Design Procedure for Laser Beam Welded Airframe Stiffened Panels Thin Walled Struct. 55 37-50
[5]  
Seib E(2011)Laser Beam Welding of Hard to Weld Al Alloys for a Regional Aircraft Fuselage Design—First Results Phys. Procedia 12 113-122
[6]  
Toksoy K(2012)The Evolution of Al-Li Base Products for Aerospace and Space Applications Metall. Mater. Trans. A Phys. Metall. Mater. Sci. 43 3325-3337
[7]  
Koçak M(2015)Hot Deformation Behavior of 2060 Alloy J. Alloys Compd. 648 681-689
[8]  
Enz J(2016)On Exfoliation Corrosion of Alloy 2060 T8E30 in an Aggressive Acid Environment J. Alloys Compd. 657 546-558
[9]  
Riekehr S(2015)Friction Stir Weld of 2060 Al-Cu-Li Alloy: Microstructure and Mechanical Properties J. Alloys Compd. 649 19-27
[10]  
Ventzke V(2017)The Effect of TIG Welding Techniques on Microstructure, Properties and Porosity of the Welded Joint of 2219 Aluminum Alloy J. Alloys Compd. 727 531-539