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INTERNATIONAL JOURNAL OF ENGINEERING, SCIENCE AND - Volume 6, Issue 8,, December 2017 (Special Issue)

Pages: 366-378

Date of Publication: 24-Dec-2017


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STUDY OF PROCESS PARAMETERS OF FRICTION STIR WELDED AA 7020 ALUMINUM ALLOY IN O AND T6 CONDITIONS

Author: A. Lakshumu Naidu? Dr. P. S. V. Ramana Rao?? Srinivas Kona???

Category: Engineering, Science and Mathematics

Abstract:

This procedure utilizes a non-consumable device to create frictional warmth in AA 7020 T-6 the adjoining surfaces. The welding parameters and device stick profile assume significant parts in choosing the weld quality. In this examination, an endeavor has been made to comprehend the impact of hardware speed (rpm) and instrument stick profile on Friction Stir Processing (FSP) zone arrangement in aluminum compound. Grating blend welding between 7020 aluminum compound plates with a thickness of 6 mm was performed. Three distinctive instrument stick profiles (straight tube shaped, decreased round and hollow, triangular, square and cone) have been utilized to manufacture the joints at three diverse rotational rates i.e. 500, 1000 and 1500 rpm under a steady navigate speed of 0.43 mm/sec. The development of FSP zone has been broke down visibly. Hardness properties of the joints have been assessed and connected with the FSP zone development. From this examination it has been discovered that the device sticks profiled plans had little impact on warm info and tractable properties, weld properties were overwhelmed by warm information as opposed to the mechanical twisting by the instrument for the plate thickness of 6 mm. Decreased round and hollow stick profiled device delivers mechanically stable and metallurgical deformity free welds.

Keywords: Friction Stir Welding; 7020 aluminum alloys; Welding speed; Axial force.