Dual alloy turbine disk

Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Turbo machine

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416244R, 29889, B64C 1104

Patent

active

051619504

ABSTRACT:
A dual alloy disk made from a rim alloy having high stress rupture and creep resistance as well as good hold time fatigue crack resistance and a hub alloy having high tensile strength and good low cycle fatigue crack resistance is described. The dual alloy disk is designed for use as a disk in gas turbine engines operating as high as 1500.degree. F. The hub and rim are joined together at a substantially defect-free joint to form a turbine disk having improved properties in both the hub and rim regions.

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