Influence of Parameters on Micro Structural and Mechanical Properties of Aluminium Based Alloy (A356) with Friction Stir Welding
Rakesh Kumar1, Yogesh Kumar2

1Dr. Rakesh Kumar,* Department of Mechanical Engineering, Ludhiana Group of Colleges, Chokimann, Ludhiana, Punjab, India.
2Dr. Yogesh Kumar, Department of Electronics Engineering, CT Group of Institutions Jalandhar, Punjab, India.
Manuscript received on November 22, 2019. | Revised Manuscript received on December 15, 2019. | Manuscript published on December 30, 2019. | PP: 4802-4805 | Volume-9 Issue-2, December, 2019. | Retrieval Number: A1229109119/2019©BEIESP | DOI: 10.35940/ijeat.A1229.129219
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Abstract: This study examines the influence of varied conditions of cooling and different rotations of tool on the accuracy of weld of aluminum samples taken out by friction stir welding process. The aim of this study was to check the effects on samples of aluminum alloy of A356 grades that were welded by friction stir welding under various conditions of cooling like cooling by water, cooling by air, cooling by nitrogen gas and cooling by lubrication oil at two varied rotating speed of tool at 900 revolution per minute and 1100 revolution per minute. These readings were being carried by experimental investigations. The influence of these different parameters on micro structural and mechanical properties of these joint are discussed. Cooling the different specimens by lubrication oil or liquid nitrogen showed to reduce the input heat in processing which reduce the improvement of grains in between the process. The reduction in input heat showed in decreasing the microscopic defects in the specimen found to gain in micro hardness and betterment of tensile properties. It was observed that best machining properties was found when the rotational speed is higher and no condition of cooling is used i.e. friction stir welding is applied in air. Also, the better findings found out from all the specimens when cooling by liquid nitrogen under rotating speed of tool at 1100 rpm as it represents higher tensile.
Keywords: Friction, stir, welding, cooling, rotational, microstructure, speeds, conditions.