Molded articles
AssigneeGeneral Electric Company
InventorsYan Cui, David Vincent Bucci, Ganjiang Feng, Srikanth Chandrudu Kottilingam, Dechao Lin
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Abstract
A method comprising introducing a first casting material into a casting mold; applying directional solidification to the first casting material in the casting mold; introducing a second casting material into the casting mold, the second casting material having a different chemical composition than the first casting material; applying directional solidification to the second casting material in the casting mold; and forming a molded article, wherein the molded article comprises a first region.
Claims10
A molded article comprising:
- a first region formed by a first casting material;
- and
- a second region formed by mixing a molten or liquid portion of the first casting material and a second casting material,
- wherein the first casting material has a different chemical composition than the second casting material,
- wherein the first region and the second region are cast as one integral casting using directional solidification, and
- wherein the second region exhibits reduced thermal cracking relative to the first region.
A molded turbine bucket for use in a gas turbine engine, the turbine bucket comprising:
- a hub;
- and
- a blade, the blade including
- a first region formed by a first casting material, and
- a second region formed by mixing a molten or liquid portion of the first casting material and a second casting material,
- wherein the first casting material has a different chemical composition than the second casting material and the first region and the second region are cast as one integral casting using directional solidification,
- wherein the second region exhibits reduced thermal cracking relative to the first region, and
- wherein the second region corresponds to a tip portion of the blade and the first region corresponds to the remaining balance of the blade.
Dependencies are inferred from the claim text.