|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Friction Stir Welding and Processing IX
||Direct Pin Tool Temperature Measurements in Friction Stir Welding
||Xiaoqian Ma, Stanley M. Howard
|On-Site Speaker (Planned)
Friction stir welds were made on 1.27 cm thick 6061 T6 Al plate using three bull nose shaped H13 pin tools. Temperatures at two locations along the pin tool-metal interface were directly measured using transmitting thermocouples inserted in the pin tool. Thermocouples located near the bottom were 17, 24, 21 and 28 K cooler than 0.79 cm away at the side of the pin tool at 200, 400, 600 and 800 RPM. Homologous temperatures of welds made at the four RPMs were within one percent of 0.80, 0.89, 0.91, 0.92 and independent of travel speed (2 to 8 IPM) or the pin tool used. Five welds over the same weld bead showed a 2 and 8 K increase in weld temperature between the first and second pass with nearly constant temperatures thereafter. There was a 2.2 K decrease in side and bottom temperature difference with weld pass number.
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