Abstract

In the present investigation, properties of the Friction Stir Welded (FSW) Aluminium 6351 alloy plates added with SiC particles in the weld zone was studied. The qualities of welds were determined in two conditions of as-weld condition and annealed condition. In addition, the hardening parameters were calculated to evaluate the quality of friction stir welds of Al 6351 alloy plates. Using swift hardening law, strength coefficient (k) and strain (ε) values were calculated keeping hardening exponent (n) as constant for Al 6351 alloy. The calculated values of strength coefficient and strain were found to be present within the theoretical design limits for both as-weld and annealed conditions. Thus the process ensures the quality of friction stir welded joints of Al 6351 alloy plates with SiC particles in the weld region both in theoretical and experimental aspects.

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