Analysis on effect of using different tool pin profile and mechanical properties by friction stir welding on dissimilar aluminium alloys Al6061 and Al7075

2nd International conference on Advances in Mechanical Engineering

Udaiyakumar, D.K.C.^1 ; Krishna, M.^1 ; Udaiyakumar, K.C.^1 ; Mohan Kumar, D.K.^1 ; Mohammed Ali, H.^1

SRM Institute of Science and Technology, Department of Mechanical Engineering, Ramapuram Campus, Chennai

600089, India^1

关键词: Alloy compositions;    Behavioral patterns;    Dissimilar aluminum alloy;    Literature studies;    Mechanical behavior;    Mechanical characteristics;    Micro Vickers hardness;    Microhardness tests;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/402/1/012099/pdf
DOI  :  10.1088/1757-899X/402/1/012099

来源: IOP

【 摘 要 】

The FSW is one of the latest advanced methods of joining the aluminum in a quicker and effective manner. The quality and the strength of the weldment depends on the tool pin profile, Thickness of weld, speed at which tool moves and the mechanical behavior of aluminum alloys used in the process. Early literature studies shows that developments are required in the field of welding in aerospace, trains and marine Engineering. The literatures show apparent void spaces in improving the strength, quality and weight of the weldment. In this work, an evaluation is made to improve the performance of different profile of tool pin and mechanical characteristics of fsw on dissimilar aluminum alloys. Two alloy compositions say Al 6061 and Al 7075 were selected and three tool pin profiles are developed to study the behavioral pattern of the welded joint. The mechanical properties say tensile strength, yield stresses and micro hardness tests will be conducted using computerized UTM and Micro Vickers hardness testing machine. The mechanical properties were studied from each specimen and correlated to highlight the qualities and characteristics. Hence this paper can form a bridge in filling up the space in finding the suitable mechanical properties for aluminum alloys in specific application. Out of three different tools pin design straight cylinder is selected by having Al6061 on advancing side and Al7075 on receding side based on mechanical properties for the application of tension and it has been proved that straight square is selected for microhardness.