Analysing the strength of friction stir welded dissimilar aluminium alloys using Sugeno Fuzzy model

International Conference on Advances in Materials and Manufacturing Applications 2017

Barath, V.R.^1 ; Vaira Vignesh, R.^1 ; Padmanaban, R.^1

Department of Mechanical Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Amrita University, Coimbatore, India^1

关键词: Developed model;    Dynamic recovery;    Friction stir;    Friction stir welding(FSW);    Process parameters;    Solid-state joining;    Sugeno fuzzy model;    Tool rotations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/310/1/012043/pdf
DOI  :  10.1088/1757-899X/310/1/012043

来源: IOP

【 摘 要 】

Friction stir welding (FSW) is a promising solid state joining technique for aluminium alloys. In this study, FSW trials were conducted on two dissimilar plates of aluminium alloy AA2024 and AA7075 by varying the tool rotation speed (TRS) and welding speed (WS). Tensile strength (TS) of the joints were measured and a Sugeno - Fuzzy model was developed to interconnect the FSW process parameters with the tensile strength. From the developed model, it was observed that the optimum heat generation at WS of 15 mm.min-1and TRS of 1050 rpm resulted in dynamic recovery and dynamic recrystallization of the material. This refined the grains in the FSW zone and resulted in peak tensile strength among the tested specimens. Crest parabolic trend was observed in tensile strength with variation of TRS from 900 rpm to 1200 rpm and TTS from 10 mm.min-1to 20 mm.min-1.