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US 12,460,664 B2Granted
Process for welding dissimilar materials with nested dovetails
AssigneeBattelle Memorial Institute
InventorsScott A. Whalen, Kenneth A. Ross, M. D. Reza-E-Rabby, Yuri Hovanski
Life of this patent
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Abstract
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.
Claims9
A method, comprising:
- engaging a first surface of a first material having a higher melting temperature with a second surface of a second material having a lower melting temperature, wherein:
- the first surface defines nested dovetail grooves in the first material;
- a first dovetail groove of the nested dovetail grooves defines a base and sidewalls in a vertical cross-section;
- and
- a second dovetail groove of the nested dovetail grooves defined within the base of the first dovetail groove;
- wherein the method comprises friction stir welding the second material and the first material with a friction stir welding tool that:
- plunges to a depth greater than a thickness of the second material;
- and
- plunges into the second dovetail groove such that edges of the tool contact corners of the second dovetail groove resulting in formation of hooks of the first material that extend upward into the second material.
6 more elements
Dependencies are inferred from the claim text.