Computational Modeling of Friction Stir Welding
نویسنده
چکیده
Friction stir welding (FSW) is a relatively new, solid-state, metal joining process invented by Wayne Thomas et al. at the Welding Institute of England (now TWI) in 1991 [1.] A FSW butt weld is made by following the joint-line of two butted pieces of material with a rotating tool while applying a significant down-force through the tool. Heating is provided at or near the tool-work interface by the rotating tool, traditionally a single piece comprised of a shoulder, which contacts the material surface, and a submerged probe. In addition to providing heat, the shoulder also serves to contain the deforming metal beneath it. The process is simple in that it involves only the movement of a nonconsumable tool through a joint. This apparent simplicity is however only superficial as the actual mechanisms of weld formation are complex and highly coupled.
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