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US 9,670,571 B2Granted
Method for manufacturing components made of single crystal (SX) or directionally solidified (DS) nickelbase superalloys
AssigneeAnsaldo Energia IP UK Limited
InventorsThomas Etter, Roland Mücke
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Abstract
The invention relates to a method for manufacturing a component, especially of a gas turbine, made of a single crystal (SX) or directionally solidified (DS) nickelbase superalloy, including a heat treatment and a machining and/or mechanical treatment step. The ductility of the component is improved by doing the machining and/or mechanical treatment step prior to said heat treatment and a solution heat treatment of the component is done prior to the machining/mechanical treatment step.
Claims13
A method for manufacturing a component comprised of a nickelbase superalloy, the nickelbase superalloy being one of:
- single crystal (SX) and directionally solidified (DS), the method comprising:
- heating the component in a first heat treatment to a temperature below a gamma prime solvus temperature of the component, the first heat treatment comprising solution heat treatment;
- machining at least one portion of the component after the first heat treatment;
- mechanically treating the component after the first heat treatment;
- heating the component in a second heat treatment after the machining and after the mechanically treating, the second heat treatment heating the component to a temperature that is below a gamma prime solvus temperature;
- applying a coating onto at least one portion of the component;
- performing a third heat treatment on the component after the coating is applied, the third heat treatment comprising at least one of:
- coating diffusion heat treatment and precipitation heat treatment.
5 more elements
Dependencies are inferred from the claim text.