Loading patent…
AssigneeBattelle Memorial Institute
InventorsGlenn J. Grant, John G. Frye, Jin Yong Kim, Curt A. Lavender, Kenneth Scott Weil
Estimating the term…
Tools for friction stir welding can be made with fewer process steps, lower cost techniques, and/or lower cost ingredients than other state-of-the-art processes by utilizing improved compositions and processes of fabrication. Furthermore, the tools resulting from the improved compositions and processes of fabrication can exhibit better distribution and homogeneity of chemical constituents, greater strength, and/or increased durability. In one example, a friction stir weld tool includes tungsten and rhenium and is characterized by carbide and oxide dispersoids, by carbide particulates, and by grains that comprise a solid solution of the tungsten and rhenium. The grains do not exceed 10 micrometers in diameter.
A friction stir weld tool comprising tungsten and rhenium, the tool further comprising carbide and oxide dispersoids, carrbide particulates, and grains not exceeding 10 micrometers in diameter, wherein the grains comprise a solid solution of the tungsten and rhenium.
A friction stir weld tool comprising tungsten, the tool further comprising carbide and oxide dispersoids and grains having diameters between 100 nm and 10 micrometers, wherein the grains comprise tungsten and substantially no rhenium.
A method of fabricating a friction stir weld tool comprising tungsten and rhenium, the method comprising the steps of:
A method of fabricating a friction stir weld tool comprising tungsten and rhenium, the method comprising the steps of:
Dependencies are inferred from the claim text.