Production and Properties of Incoloy® Alloy 908 Tubing for Sheathing of Nb3Sn Superconducting Cables
INCOLOY alloy 908 is a controlled thermal expansion, age-hardenable alloy developed for Nb3Sn cable-in-conduit sheathing applications. It has been specified for the International Thermonuclear Experimental Reactor (ITER) model superconducting magnet coils and is being considered for other similar applications. Overviews of the production sequences for several types of tubing for sheathing are presented. Supporting studies, such as hot ductility, work hardening behavior, and heat treatment responses, used to develop the production schemes are also described. Finally, example properties of the tubing are presented and discussed.
KeywordsCold Work International Thermonuclear Experimental Reactor Cold Drawing Vacuum Induction Melting Incipient Melting
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