Battelle Memorial Institute

M D Reza-E-Rabby

Scott A Whalen

Kenneth A Ross

Martin McDonnell

Methods are provided for connecting two dissimilar materials. The methods can include: placing a first material within a groove of a second material, the first material leaving at least a portion of the groove vacant; and placing a third material upon the first material and over the groove; heating the second and third materials to a temperature sufficient to plasticize the second and third materials within the groove and form a mixture of the second and third materials within the groove. Friction stir welding tools are also provided that can include a frusta conical tip having an upper portion defining smooth sidewalls and a lower portion defining a roughened structure.

Methods for friction stir welding involving dissimilar materials

A method for connecting two dissimilar materials having different melting points is described wherein a the materials are heated together to obtain plasticization of the lower melting point material within a prefigured geometry within a first material in such a way so as to form intermetallic features within a solid state joint.

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Richland, WA, United States of America

M D Reza-E-Rabby