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High power x-ray welding of metal-matrix composites

United States Patent

5,994,660
November 30, 1999
View the Complete Patent at the US Patent & Trademark Office
Argonne National Laboratory - Visit the Technology Development and Commercialization Website
A method for joining metal-matrix composites (MMCs) by using high power x-rays as a volumetric heat source is provided. The method involves directing an x-ray to the weld line between two adjacent MMCs materials to create an irradiated region or melt zone. The x-rays have a power density greater than about 10.sup.4 watts/cm.sup.2 and provide the volumetric heat required to join the MMC materials. Importantly, the reinforcing material of the metal-matrix composites remains uniformly distributed in the melt zone, and the strength of the MMCs are not diminished. In an alternate embodiment, high power x-rays are used to provide the volumetric heat required to weld metal elements, including metal elements comprised of metal alloys. In an alternate embodiment, high power x-rays are used to provide the volumetric heat required to weld metal elements, including metal elements comprised of metal alloys.
Rosenberg; Richard A. (Naperville, IL), Goeppner; George A. (Orland Park, IL), Noonan; John R. (Naperville, IL), Farrell; William J. (Flossmoor, IL), Ma; Qing (Westmont, IL)
U.S. Department of Energy (Washington, DC)
08/ 974,167
November 19, 1997
The United States Government has rights in this invention pursuant to Contract Number W-31-109-ENG-38 between the United States Department of Energy and The University of Chicago, as operator of.