Method of manufacturing nickel based super alloy parts
AssigneePratt & Whitney Canada Corp.
InventorsThomas Georges, Orlando Scalzo, Marc Lorenzo Campomanes
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Abstract
There is provided a method of treating a nickel base super alloy (NiSa) article. First, the NiSa article having fine grains is obtained. The NiSa article has a uniform distribution of the fine grains and substantially uniform mechanical properties throughout. One or more regions within the NiSa article are mechanically deformed. Then, the NiSa article is heat treated to obtain coarse grains in the one or more regions, the coarse grains having a size that is larger than that of the fine grains of the NiSa article outside of the one or more regions.
Claims14
A method of treating a nickel base super alloy (NiSa) article, the method comprising:
- i) obtaining the NiSa article, the NiSa article having a uniform distribution of fine grains;
- ii) mechanically deforming one or more regions within the NiSa article;
- and
- iii) heat treating the NiSa article to obtain coarse grains in the one or more regions, the coarse grains having a size that is larger than that of the fine grains of the NiSa article outside of the one or more regions, wherein the coarse grains are larger than 500 μm.
A method of manufacturing a nickel base super alloy (NiSa) article, comprising:
- i) molding the NiSa article by powder metallurgy, the NiSa article having a uniform distribution of fine grains;
- ii) mechanically deforming one or more regions of the NiSa article;
- and
- iii) heat treating the NiSa article to obtain coarse grains in the one or more regions, the coarse grains having a size that is larger than that of the fine grains of the NiSa article outside of the one or more regions, wherein the coarse grains are larger than 500 μm.
Dependencies are inferred from the claim text.