Friction stir welding and processing of oxide dispersion strengthened (ods) alloys
AssigneeUT-Battelle, LLC
InventorWeiju Ren
Life of this patent
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Abstract
A method of welding including forming a filler material of a first oxide dispersoid metal, the first oxide dispersoid material having first strengthening particles that compensate for decreases in weld strength of friction stir welded oxide dispersoid metals; positioning the filler material between a first metal structure and a second metal structure each being comprised of at least a second oxide dispersoid metal; and friction welding the filler material, the first metal structure and the second metal structure to provide a weld.
Claims27
A method of welding comprising:
- forming a filler material of a first oxide dispersoid metal, the first oxide dispersoid material having first strengthening particles that compensate for decreases in weld strength of friction stir welded oxide dispersoid metals;
- positioning the filler material between a first metal structure and a second metal structure each being comprised of at least a second oxide dispersoid metal;
- and
- friction welding the filler material, the first metal structure and the second metal structure to provide a weld.
A method of welding comprising:
- positioning a filler material comprised of a first oxide dispersoid metal between a first metal structure and a second metal structure, the first metal structure and the second metal structure being comprised of at least a second oxide dispersoid metal, wherein the first oxide dispersoid metal has a concentration of first strengthening particles that is greater than or equal to a concentration of second strengthening particle in the at least the second oxide dispersoid metal;
- and
- friction welding the filler material, the first metal structure and the second metal structure to provide a weld joining the first metal structure to the second metal structure.
The method of claim, wherein the at least one of the first oxide dispersoid metal and the second oxide dispersoid metal comprises a first strengthening particle is an oxide comprised of yttrium (III) oxide (Y2O3), aluminum (III) oxide (Al2O3), hafnium (IV) oxide (HfO2), lanthanum(III) oxide (La2O3), titanium oxide (Ti2O3), cerium(IV) oxide (CeO2), and cerium(III) oxide (Ce2O3) or a combination thereof.
A weldment comprising a first metal structure of a first oxide dispersoid material that is joined to a second metal structure of a second oxide dispersoid material by a weld, wherein the weld that is joining the first and second metal structures has a creep rupture stress that ranges from 75% to 100%, or greater than 100%, of a creep rupture stress of an unwelded portion of at least one of the first and second metal structures.
Dependencies are inferred from the claim text.