Mechanical Engineering

Osamah Sabah Barrak This email address is being protected from spambots. You need JavaScript enabled to view it.1, Mahmood Mohammed Hamzah2, and Sabah Khammass Hussein3

1Institute of Technology - Baghdad, Middle Technical University, Baghdad, Iraq
2College of Engineering, Al Iraqia University, Baghdad, Iraq
3Engineering Technical College - Baghdad, Middle Technical University, Baghdad, Iraq

 

Received: May 2, 2022
Accepted: September 15, 2022
Publication Date: October 28, 2022

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.


Download Citation: ||https://doi.org/10.6180/jase.202308_26(8).0006  


ABSTRACT

Friction stir spot welding (FSSW) joining process was used to join pure copper (C11000) with aluminum alloy (AA5052). So, a successfully joining for the samples is achieved. There were many parameters of joining utilized in this joining process: a) the tool was the rotating speed (900, 1800, and 2700) rpm, b) the pin inserting rate (0.4 and 0.5 mm/min) and, c) the holding time (15 sec); the surface of the aluminum specimen was make up as pre-holed with a hole of 5mm diameter. The mechanical and chemical tests for the specimen were tested. After that, the quality of the lap joint was evaluated by mechanical and microstructure tests. The joint build by extruded the copper alloy through the pre-hold aluminum alloy and penetrated the threaded hole. In addition to the above, a mechanical interlock was accomplished between the contact surfaces of the joint. The FSSW process is effects on the lap joint between AA5052 and C11000 by the welding parameters process. The rotating speed as well as the holding time of the welding process parameter is effect on the joint strength by increasing the value of the parameters to improve the joint strength and increasing the shear strength. The other welding process parameter is the tool plunging depth, which has a basic influence on the lap joint strength. As a result, to increasing the joint quality, it should be increasing the plunging depth parameter. The microstructure is showed two kinds of mode: failure shear and pull-out.


Keywords: AA5052; C11000, Friction Stir Spot Welding; Pre-Holed Threaded; Extrusion


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