Method for making a compositionally graded gas turbine disk

摘要

A compositionally graded gas turbine disk (20) is made by preparing a rotationally symmetric radially inner segment (28) of a gas turbine disk preform, rotating the inner segment about a central axis (24), spray applying a radially outer-segment material onto the radially inner segment (28) as it rotates about the central axis (24), preferably achieving a gradual transition in composition, and thereafter further processing the gas turbine disk preform to produce the compositionally graded gas turbine disk (20).