Controlled grain microstructures in cast alloys
AssigneeGeneral Electric Company
InventorsBrian David Przeslawski, Manuel Acosta, Douglas Gerard Konitzer, Joshua Leigh Miller, Adegboyega Masud Makinde
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Abstract
Methods for creating a cast component, along with the resulting cast components, are provided. The method may provide for a controlled grain structure in the resulting cast component. The methods may include heating at least a first portion mold under controlled conditions, such as when the first portion of the mold is buried in a ceramic powder.
Claims15
A method of creating a cast alloy component from a metal material having a solidus temperature and a liquidus temperature, comprising:
- burying a mold in a powder of ceramic material;
- heating the mold within the powder of ceramic material to an initial mold temperature that is 50% or less in degrees Celsius of the solidus temperature of the metal material;
- thereafter, pouring molten metal material into the mold buried in the powder of ceramic material;
- and
- thereafter, allowing the molten metal material to form the cast alloy component within the mold buried within the powder of ceramic material.
A method of creating a cast alloy component from a metal material having a solidus temperature and a liquidus temperature, comprising:
- burying at least a first portion of a mold in a powder of ceramic material;
- heating the mold within the powder of ceramic material under controlled conditions such that the first portion of the mold has an initial first portion temperature and a second portion of the mold has an initial second portion temperature that is different than the initial first portion temperature;
- thereafter, pouring molten metal material into the mold while the first portion is buried in the powder of ceramic material such that the molten metal material fills the first portion and the second portion of the mold;
- and
- thereafter, allowing the molten metal material to form the cast alloy component within the mold while the first portion is buried within the powder of ceramic material.
A method of creating a cast alloy component from a metal material having a solidus temperature and a liquidus temperature, comprising:
- burying at least a first portion of a mold in a powder of ceramic material;
- heating the mold within the powder of ceramic material;
- thereafter, pouring molten metal material into the mold while the first portion is buried in the powder of ceramic material;
- thereafter, allowing the molten metal material to form the cast alloy component within the mold while the first portion is buried within the powder of ceramic material;
- and
- removing the mold from the powder of ceramic material and allowing the mold to cool while subjecting the mold to an overpressure.
Dependencies are inferred from the claim text.