Published in United States Patent Number: 0283918 A1, December 21, 2006, pages 1-6.
Metallic materials may be joined utilizing a friction stir processing technique. The friction stir processing technique utilizes a shaped, rotating tool to move material from one side of the joint to be welded to the other without liquefying the base material.
Materials Science and Engineering
United States Patent Number: 0283918, Dec. 21, 2006,6 pages. Also available from the United States Patent and Trademark Office. Website: http://www.uspto.gov