Patent ID: 6779704
Filing Date: 2004-08-24
Classification: B23K

Abstract:
A friction stir welding tool that is capable of functionally friction stir welding metal matrix composites (MMCs), ferrous alloys, non-ferrous alloys, and superalloys, said friction stir welding tool comprising:a friction stir welding tool having a shank, a shoulder and a pin, wherein the shoulder is mechanically locked to the shank to thereby prevent rotational movement of the shoulder relative to the shank; and a superabrasive material disposed on at least a portion of the shoulder and the pin, wherein the superabrasive material has a first phase and a secondary phase, wherein the superabrasive material is manufactured under an ultra high temperature and an ultra high pressure process, and wherein the friction stir welding tool is capable of functionally friction stir welding MMCS, ferrous alloys, non-ferrous alloys, and superalloys.