Friction Stir Welding of three dissimilar aluminium alloy: AA2024, AA6061 and AA7075

6th ModTech International Conference - Modern Technologies in Industrial Engineering

Bosneag, A.^1 ; Constantin, M.A.^1 ; Nitu, E.^2 ; Iordache, M.^2

University Politehnica of Bucharest, Department of Machine Building Technology, Splaiul Independenei Street, No. 313, Romania^1

University of Pitesti, Department of Manufacturing and Industrial Management, Târgul din Vale Street, No.1, Romania^2

关键词: Aeronautics industry;    Experiment study;    Experimental investigations;    Experimental plans;    Process parameters;    Titanium and alloys;    Welding institutes;    Welding parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/400/2/022013/pdf
DOI  :  10.1088/1757-899X/400/2/022013

来源: IOP

【 摘 要 】

Friction Stir Welding, named FSW, was invented in 1991 by The Welding Institute - TWI, U.K. and in the first instance was used to weld the aluminium alloy plates. Until now, this process was developed to join a large variation of materials: copper and brass, magnesium and alloys, titanium and alloys, different steel, polymeric materials and composite materials, in similar or dissimilar combination. This paper presents the results of experimental investigation of FSW joints to for three dissimilar aluminium alloys (AA2024, AA6061 and AA7075), in overlapped position, with a thickness 2 mm for everyone. All these three aluminium alloy are use in aeronautics industry, considering that the body of airplane are 20% aluminium alloy. In the experiment study, these three materials were positioned as follows: AA7075 on top, AA2024 in the middle and AA6061 below), and the value of input process parameters, rotation speed and advancing speed, was variate for minimum situation, maximum situation and medium situation and all of this was arranged in an experimental plan with two repetitions to the centre values. The experimental plan contained six experiments. The exit date recorded are: temperature and vertical force achieved in process time, microstructure and macrostructure of welding seams and micro-hardness. These dates will be compared between them and will be identified the influence of welding parameters (advancing speed and rotation speed) on the welding seams properties and the best combination between them for these three aluminium alloys.