Joining of non-weldable AA7075 and weldable AA6082 aluminium alloy sheets by Friction Stir Welding

23rd International Conference on Manufacturing

Kovács, Zsolt^1 ; Hareancz, Ferenc^1

John von Neumann University, GAMF Faculty of Engineering and Computer Science, Dep. of Vehicle Technology, Kecskemét

H-6000, Hungary^1

关键词: Aluminium-alloy sheets;    Crystallographic textures;    Friction stir welding(FSW);    Hardness profiles;    Process parameters;    Solid-state joining;    Through-thickness;    Traverse speed;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/448/1/012001/pdf
DOI  :  10.1088/1757-899X/448/1/012001

来源: IOP

【 摘 要 】

In this work, an attempt has been made to join the AA6082-T651 and AA7075-T651 aluminium alloys by friction stir welding (FSW). The FSW is a solid-state joining process which primarily used on aluminium because the metal is not melted during the process so the base material can not soften. For the welding were using cylindrical pin tool, marble table to avoid the harmful heat conduction, two rotation rate of 500 and1000 rpm and different traverse speeds of 15, 20, 25 and 30 mm/min to weld butt joints. The aim of present study were to experimentally explore the dissimilar bounds. For evaluations, hardness testing were using to create hardness profiles across the joint in through thickness direction and optical microscope to classify the microstructures and crystallographic textures of base materials (BM). Based on the results obtained it can be stated that the FSW suitable for AA7075 and AA6082 welding by further optimization of the process parameters.