General Electric Company

Barbara Ann Link

Richard G Menzies

Terrence Owen Dyer

Andrew Philip Woodfield

Mark Daniel Gorman

Andrew J Lammas

Charles William Carrier

Edward Lee Raymond

Shesh Krishna Srivatsa

Mark Dean Pezzutti

Daniel Edward Wines

Richard Frederick Halter

Mike Eugene Mechley

Francis Mario Visalli

Randy Joseph Ketterer

Richard Gordon Menzies

A method for fabricating a rotor assembly for a turbine, the turbine including a central rotational axis is provided. The method includes forging a first rotor component from a first material, separately forging a second rotor component from a second material, and coupling the second rotor component to the first rotor component at a location radially inward of the first rotor component. The second rotor component is coupled to the first rotor component in at least one axial-circumferential plane that is at least one of substantially parallel and obliquely oriented with respect to the central rotational axis.

Rotary machine components and methods of fabricating such components

A forging blank of a forging nickel-base superalloy is forged in a forging press having forging dies made of a die nickel-base superalloy. The forging is accomplished by heating the forging blank to a forging-blank starting temperature of from about 1850&#xb0; F. to about 1950&#xb0; F., heating the forging dies to a forging-die starting temperature of from about 1500&#xb0; F. to about 1750&#xb0; F., placing the forging blank into the forging press and between the forging dies, and forging the forging blank at the forging-blank starting temperature using the forging dies at the forging-die starting temperature, to produce a forging.

Quasi-isothermal forging of a nickel-base superalloy

An alpha-beta titanium-base alloy is heat treated to improve its dwell fatigue properties while retaining a good balance of mechanical properties. The heat treatment includes first heating the alpha-beta titanium-base alloy to a first heat-treatment temperature in a first range of from about 70&deg; F. below a beta transus temperature of the alpha-beta titanium-base alloy to the beta transus temperature of the alpha-beta titanium-base alloy, and quenching the alpha-beta titanium-base alloy at a rate of greater than about 200&deg; F. per minute. The alpha-beta titanium-base alloy is second heated to a second heat-treatment temperature in a second range of from about 100&deg; F. to about 400&deg; F. below the beta transus temperature of the alpha-beta titanium-base alloy, and thereafter cooling the alpha-beta titanium-base alloy to ambient temperature at a rate of from about 10&deg; F. per minute to about 200&deg; F. per minute.

Heat treatment for improved properties of alpha-beta titanium-base alloys

Growing community of inventors

West Chester, OH, United States of America

Barbara Ann Link