The invention relates to a method of manufacture by flow turning in the cold state (or by high work-hardening) of an alloy 718 (inconel 718), optionally followed by an aging heat treatment. br / the process according to the invention makes it possible in particular be obtained by flow turning in the cold state of the body or cylindrical structures having very high mechanical characteristics, particularly when hot. & br / of such body or metal structure of great length, but of low thickness, can in particular be used as reservoirs or as a structure of the thruster in the aeronautical industry.
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