Fig. 3From: The effect of pin profiles on the microstructure and mechanical properties of underwater friction stir welded AA2519-T87 aluminium alloyOptical micrograph of the various regions of THC joint a. Stir zone of FSW joint. b. Stir zone of UWFSW joints. c. AS-TMAZ of FSW joints. d. AS-TMAZ of UWFSW joints. e. RS-TMAZ of FSW joints. f. RS-TMAZ of UWFSW joints g. RS-HAZ of FSW joints. h. RS-HAZ of UWFSW jointsBack to article page