Accession Number:

AD0743107

Title:

Joining Techniques for Fabrication of High-Temperature Superalloy Blades

Descriptive Note:

Final rept. 1 Jul-30 Sep 1971

Corporate Author:

PRATT AND WHITNEY AIRCRAFT GROUP EAST HARTFORD CT

Personal Author(s):

• Nessler, C. G.

Report Date:

1971-12-01

Pagination or Media Count:

128.0

Abstract:

Three diffusion welding systems were evaluated for applicability to the fabrication of advanced design air-cooled gas turbine blades from split halves. The joining systems evaluated were based upon the use of interlayers to promote and enhance diffusion welding of the directionally solidified superalloy modification of MARM-200 used for this program. Particular emphasis was placed on increasing the ability of the joining systems to accommodate lack of fit which is a major concern in diffusion welding complex-shaped hollow parts.

Descriptors:

• *DIFFUSION BONDING
• *GAS TURBINE BLADES
• MECHANICAL PROPERTIES
• JOINING
• ELECTROPLATING
• HEAT RESISTANT METALS
• HEAT RESISTANT ALLOYS
• COBALT ALLOYS
• NICKEL ALLOYS
• MANUFACTURING

Subject Categories:

• Fabrication Metallurgy
• Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE