Parameter Optimization in Al6061/HIF GA Steel Friction Stir Lap Welds

Abstract:

Friction Stir welding has been attempted to study the feasibility of FSW between aluminium sheet (AA 6061) of 2 mm thick and Zinc coated steel (HIF-GA) sheet of 1 mm thick in lap joint configuration. The interfacial area of dissimilar welds has been analyzed by XRD, EPMA,TEM with EDS and nano indentation technique to identify the IMC distribution pattern depending on the combined effect of rotational speed and travel speed as well as the effect of energy and thermal cycle. The average joint strength is significantly influenced by the thermal cycle, respective torque and combined effect of rotational speed and travel speed as well as energy input. Improved joint strength between Al and coated steel could be obtained within a combination of rotational speed and travel speed as well as energy input. Force and torque response during FSW have been analyzed in terms of parameter optimization and joint performance.

• Periodical: Advanced Materials Research (Volume 628)
• Pages: 199-205
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.628.199
• Online since: December 2012
• Authors: Hrishikesh Das, Sushovan Basak, Goutam Das, Tapan Kumar Pal
• Keywords: Force, Friction Stir Lap Welding (FSLW), High Strength Interstitial Free Steel (HIF), Intermetallic Compound (IMC), Torque

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