United Technologies Corporation

Raytheon Technologies Corporation

General Electric Company

Rtx Corporation

Enrique E Montero

Mario P Bochiechio

Agnieszka M Wusatowska-Sarnek

Eli N Ross

Max A Kaplan

Larry G Housefield

Ruston M Moore

David Paul Mourer

Eric Scott Huron

Kenneth Rees Bain

Promila Bhaatia

Paul L Reynolds

John J Schirra

Dennis C Stewart

Jack S Thrower

Ashwin Sreekant Raghavan

Ashwin Raghavan

James S Guest

A joining method includes performing a first heat treatment step on a first superalloy workpiece and a second superalloy workpiece wherein at least one of the first and second superalloy workpieces include a gamma matrix phase and a gamma-prime precipitate phase. The first and second superalloy workpieces are joined using a solid state joining process, subjected to a post-weld stress relief operation and a final aging heat treatment.

Heat treatment and stress relief for solid-state welded nickel alloys

A method for preventing powder depletion/contamination during a consolidation process provides a can for holding a powdered material; the can having an interior wall; a protective layer is positioned intermediate the powdered material and the interior wall utilizing a sol-gel process utilizing monodisperse nanopowders; and the protective layer being formed from a material selected from the group consisting of nickel alloys, chrome alloys, and combinations thereof.

Method for preventing powder depletion/contamination during consolidation process

A powder filling method includes introducing a tube into a can so that the lower end of the tube is near the bottom of the can. The powder in the can is introduced through the tube. The proximity of the lower end of the tube to the powder is controlled by retracting the tube as the powder fills the can.

Method for elimination of powder segregation during can filling

A superalloy has a composition of, in weight percent, from about 16.0 percent to about 22.4 percent cobalt, from about 6.6 percent to about 14.3 percent chromium, from about 1.4 percent to about 3.5 percent tantalum, from about 1.9 percent to about 4.0 percent tungsten, from about 1.9 percent to about 3.9 percent molybdenum, from about 0.03 percent to about 0.10 percent zirconium, from about 0.9 percent to about 3.0 percent niobium, from about 2.4 percent to about 4.6 percent titanium, from about 2.6 percent to about 4.8 percent aluminum, from 0 to about 2.5 percent rhenium, from about 0.02 percent to about 0.10 percent carbon, from about 0.02 percent to about 0.10 percent boron, balance nickel and minor amounts of impurities. The superalloy is advantageously utilized in aircraft gas turbine disks.

Superalloy optimized for high-temperature performance in high-pressure turbine disks

A method is disclosed for controlling the magnitude and location of the weld notch which results from inertia welding of certain materials, such as superalloys. By controlling the size and geometry of the articles being joined a curved weld zone will result and the material expelled from the weld zone which produces the weld notch will be directed in a fashion which moves the weld notch outside of the original diameter of the articles being joined. The resultant welded article consisting of a larger portion and a smaller portion can be machined to the size of the smaller portion without any residual weld notch.

Inertia weld notch control through the use of differential wall

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Marlborough, CT, United States of America

Enrique E Montero