Anvil for friction stir welding high temperature materials

Details Anvil for friction stir welding high temperature materials Anvil for friction stir welding high temperature materials

2006-03-13

2009-10-27

Parker, Frederick J (Department: 1792)

Coating processes

Solid particles or fibers applied

Uniting particles to form continuous coating with...

C427S191000, C427S192000, C427S201000

Reexamination Certificate

active

07608296

ABSTRACT:
A friction stir welding anvil and method of producing a friction stir welding anvil that precludes diffusion or mechanical bonding of the anvil to the work pieces are provided. The alternatives for producing such an anvil comprise coating the anvil with diffusion barriers such as oxides, nitrides, intermetallics, and/or refractory metals; manufacturing an anvil either completely or partially from the same; or placing a coating of such materials in the form of a thin sheet or a powder between the anvil and the work pieces. The anvil disclosed herein exhibits high strength and hardness even at elevated temperatures, such as those greater than 800° C., so as to prevent the anvil from mechanically or diffusion bonding to the work pieces and so as to minimize, or eliminate altogether, anvil deformation.

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A page from the University of South Carolina's website regarding “Friction Stir Welding.” The URL is http://www.engr.sc.edu.
Pages from the website for TWI World Centre for Materials Joining Technology regarding “Friction Stir Welding at TWI.” The URL is http://www.twi.co.uk/j32k/unprotected/band—1/fswintro.html.

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