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Analysis of Micro Vickers Hardness of Friction Stir Welding of Dissimilar Aluminum Alloys (AA6061-T6 and AA6082-T6)

Affiliations

  • ME Department, Chandigarh University, Mohali, 141013, Punjab, India
  • ME Department, GNDEC, Ludhiana - 141006, Punjab, India

Abstract


Objectives: Friction Stir Welding method is used to join two metals or alloys with the help of rotating tool along the butt edges of the workpieces. The material reaches recrystallization temperature which leads to formation of high strength weld without the melting of joining materials. In this research, the dissimilar aluminum alloy plates (AA6061 and AA6082) of 6 mm thickness were Friction Stir Welded and mechanical properties were investigated. Methods/Analysis: Experiment was performed using Taguchi L9 technique and the different plates were welded with the help of friction at different tool rotational speeds of 800, 1100 and 1400 rpm by shifting the welding speeds i.e. 180, 150 and 120 mm/min and tool profiles (cylindrical threaded and taper threaded). Findings: It was concluded from the present study that the average value of hardness was lower compared to base alloy at the zone of nugget. Novelty/Improvement: Friction Stir Welding procedure can be economically utilized as a part of welding of different aluminum compounds.

Keywords

Driction Stir Welding.

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