United Technologies Corporation

Raytheon Technologies Corporation

Rtx Corporation

Michael F Machinchick

David Ulrich Furrer

James R Murdock

Andrew L Haynes

Luke H Rettberg

Vasisht Venkatesh

Janet M Stanley

Daniel Gynther

Michael J Linden

Russell Albert Beers

Allan A Noetzel

Disclosed is a method of making an integrally bladed rotor. According to the method, a rotor disk comprising a radially outer rim surface is provided. A portion of the disk outer rim surface is removed, leaving a protrusion on the rotor disk outer rim surface. The disk with material removed is subjected to thermal processing. A blade comprising an airfoil and a base is positioned such that a base surface is in contact with the protrusion, and heat, pressure, and motion are applied between the blade and the disk to friction weld the base surface to the protrusion.

Method of making integrally bladed rotor

Disclosed is a method of making an integrally bladed rotor. According to the method, a titanium alloy rotor disk with 15-50% by volume of primary alpha grains with a grain size less than 10 &#x3bc;m and secondary alpha grains comprising widmanstatten grains with a grain size less than 1.0 &#x3bc;m is subjected to thermal processing. After thermal processing, a blade having an airfoil and a base is positioned such that a base surface is in contact with an outer rim surface of the disk. Heat, pressure, and motion are applied between the blade and the disk to friction weld the base surface to the disk outer rim surface.

Process of making integrally bladed rotor

A method is taught for protecting the surface of a nickel, cobalt, or titanium alloy from fretting wear by coating said surface with a copper-aluminum alloy.

Method for reducing fretting wear between contacting surfaces

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Cromwell, CT, United States of America

Michael F Machinchick