Development and Demonstration of Manufacturing Techniques for Joining Bimetal Shafts.
Final technical rept. Jun 66-Jun 70,
PRATT AND WHITNEY AIRCRAFT GROUP EAST HARTFORD CT
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A unique heat treatment which produced excellent material properties in AMS 6304 and Inconel 718 is described. Joining of AMS 6304 to Inconel 718 by means of coextrusion, inertia welding, friction welding, flash-butt welding, and electron-beam welding was evaluated. The joining processes, material properties, and joint properties are presented. Two bimetal low pressure turbine shafts for the TF30-P-3 engine were manufactured, and rig and engine tested. The joining of shafts to high pressure turbine disks by inertia welding was evaluated. The joining of, and properties obtained with, Waspaloy-to-Waspaloy, Incoloy 901-to-Incoloy 901, Inconel 718-to-Inconel 718 and Waspaloy-to-Inconel 718 joints are described. A bimetal heat treatment necessary for the Waspaloy-to-Inconel 718 joints is presented. Author
- Fabrication Metallurgy
- Machinery and Tools