Evaluating Optimal Process Parameters in Dissimilar Friction Stir Welding of Al Alloys
R. MadhuSudhan1, N. Ramanaiah2, K. Praveen Kumar3
1R. MadhuSudhan, Department of Mechanical Engineering, Andhra University College of Engineering (A), Visakhapatnam, (AP),India.
2N. Ramanaiah, Department of Mechanical Engineering, Andhra University College of Engineering (A), Visakhapatnam, (AP),India.
3K. Praveen Kumar, Department of Mechanical Engineering, Raghu College of Engineering, Visakhapatnam, (AP),India.
Manuscript received on November 24, 2014. | Revised Manuscript received on December 10, 2014. | Manuscript published on December 30, 2014. | PP: 204-208 | Volume-4 Issue-2, December 2014. | Retrieval Number: B3687124214/2013©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: This study is made to determine the near optimal process parameters ( speed, feed, axial force) of Friction Stir Welding (FSW) of dissimilar aluminum alloys AA 6262 and AA7075 using gray relational analysis by simultaneously considering multiple output parameters tensile strength (UTS ) and hardness (VHN). Experiments were performed with three process parameters such as tool rotational speed, weld speed and axial force considering three levels of each. All the possible combinations are used for the experimentation. Optimum process parameter combination of the FSW of dissimilar aluminum alloys was obtained via gray relational grade obtained from the gray relational analysis. Confirmation experiment has been conducted to validate the optimized parameters. The predicted and initial parameters have the better aspect ratio. The optimal process parameters were identified in order to find the quality of the welded specimens.
Keywords: FSW, Gray Relational Analysis, Dissimilar Aluminium alloys.