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As a relatively high melting point material, Ti can be joined by the friction stir welding (FSW) using a sintered TiC welding tool and a water cooling system. The FSW zones of Ti were classified by the weld nugget (WN), the linear transition boundary (TB) and the heat affected zone (HAZ). The WN was characterized by the presence of considerable amount of twins and high density of dislocations. The...
The objective of this work was to demonstrate the feasibility of friction stir welding (FSW) for joining of copper. Defect free weld were produced on 4 mm thick copper plate at travel speed of 61 mm/min and tool rotation speed of 1250 rpm using a general tool steel as the welding tool. The stir zone showed the very fine and equaxied grain structure compared to the base metal which had a elongated...
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