FRICTION STIR WELDIN OF METAL MATRIX COMPOSITES, FERROUS ALLOYS, NON-FERROUS ALLOYS, AND SUPERALLOYS USING A SUPERABRASIVE TOOL

摘要

A probe for friction stir welding MMCs, ferrous alloys, non-ferrous alloys, and superalloys, as well as non-ferrous alloys, the probe (28) including a shank (30), a shoulder (32), and a pin (34) disposed through the shoulder and into the shank, wherein the pin and the shoulder at least include a coating comprised of a superabrasive material, the pin and shoulder being designed to reduce stress risers, disposing a collar (36) around a portion of the shoulder relative to the shank, and incorporating thermal management by providing a thermal flow barrier (38) between the shoulder and the shank, and a second thermal flow barrier (40) between the collar and the tool.