Patent
Superalloy article repair method and alloy powder mixture
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TLDR
A powder alloy mixture for use in a method of repairing high temperature superalloy articles includes a first, higher temperature alloy powder in the range of about 35-65 weight percent of the mixture.Abstract:
A powder alloy mixture for use in a method of repairing high temperature superalloy articles includes a first, higher temperature alloy powder in the range of about 35-65 weight percent of the mixture. The first alloy powder is based on at least one element selected from Ni and Co and is characterized as having good strength and environmental resistance along with the substantial absence of melting point depressant elements selected from Si and B in amounts greater than about 1% Si and 0.5% B. The second alloy powder is of a lower melting temperature alloy of Ni--Cr--Si--B--Co and is characterized by the substantial absence of C.read more
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References
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Superalloy article cleaning and repair method
Donald Lee Keller,Resor D L +1 more
TL;DR: In this paper, a Ni-base superalloy article is repaired by first removing a complex oxide of at least one metal selected from Al and Ti, by treatment of the oxide in the crevice with gaseous active fluoride ions in a non-oxidizing atmosphere at a temperature at which the oxide will react with the fluoride ions under the conditions around the oxide.
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Gas turbine element
TL;DR: Gas turbine blades or vanes are cast with an elongated columnar grain structure from the following alloys as mentioned in this paper, which are used for turbine blades and vanes in gas turbine engines.
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Method of remanufacturing turbine vane clusters for gas turbine engines
TL;DR: In this article, a method for remanufacturing turbine vane clusters of gas turbine engines is described, and concepts and techniques for salvaging undamaged vanes from a damaged vane cluster are developed.
Patent
Diffusion bonding of superalloy members
Abstract: An improved diffusion-bonded, age hardenable joint between superalloy members results from a method which combines the benefits of vacuum high-temperature brazing and pressure solid-state diffusion bonding through use of an age hardenable bonding powder related to the superalloy and including temperature depressants selected from B, Si, Mn, Cb, Ta and their mixtures. The method avoids the need for pressure during the diffusion bonding portion.
Patent
Brazing alloy composition
TL;DR: A powder brazing composition is provided comprising a blend of at least two alloy powders (A and B) as essential ingredients, the ratio of powder alloy to powder alloy (B) ranging in parts by weight from about 50 (A)/50(B) to 75(A)/25(B), the mixture being such that the average composition thereof with respect to the silicon and boron contents being about 0.15 to 1.5 percent by weight as mentioned in this paper.