Abstract
The relationship between thermomechanical processing, hardness, grain size and mechanical properties has been studied for INCOLOY® alloy 908, a nickel-iron base superalloy developed for use as a conduit material in Nb3Sn cable-in-conduit conductors (CICC).1 The alloy has thermal coefficient of expansion properties tailored for Nb3Sn, minimizing compressive strain in the superconductor due to cooldown and the associated reduction in critical properties (upper critical field, critical temperature, and critical current). Alloy 908 also has mechanical properties at cryogenic temperatures that compare favorably with other materials. It is therefore one of the candidate materials for use in the magnets of the International Thermonuclear Experimental Reactor (ITER).2,3
Supported by the US Department of Energy
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References
L.S. Toma, LS. Hwang, M.M. Steeves, “Incoloy 908 Database Report On Process - Structure - Property Relationship,” MIT Plasma Fusion Center Report # PFC/RR-93–2 (May 1993).
I.S. Hwang, R.G. Ballinger, M.M. Morra, M.M. Steeves, Mechanical properties of Incoloy 908 - an update, in: “Advances in Cryogenic Engineering - Materials,” Plenum, NY, 38A:1 (1992).
R.W. Conn, V.A. Chuyanov, N. Inoue and D.R. Sweetman, The ITER, Sci. American, (April 1992).
INCO Alloys International Certified Material Test Report, IAII Order #H98277 3 (28 August 1987).
INCO Alloys International Certified Material Test Report, IAII Order #J18929 2 (05 July 1992).
M.M. Steeves, Hoenig, Takayasu, Randall, Tracey, Hale, Morra, Hwang, Marti, Progress in the manufacture of the US-DPC test coil, “IF.EF Trans. on Mag., ” 25#2: 1738 (March 1989).
T. Roberts, Work Hardening Response of Incoloy 908 and NI-SPAN-C alloy 902, Progress Report # 2, INCO, Huntington WV, ( 17 August 1992 ) ( Used with permission).
C.K. Elliott, “Effect of Thermal Treatment on the Fracture Properties of Alloy X-750 in Aqueous Environments,” MIT, Cambridge MA (1985).
C.T. Sims, A perspective of Niobium in superalloys, in: “Niobium Proceedings of the International Symposium,” H. Stuart, ed., TMS, 1169 (1981).
M.M. Mona, R.G. Ballinger, and I.S. Hwang, Incoloy 908, a low coefficient of expansion alloy for high-strength cryogenic applications: part I. physical metallurgy, Met. Trans. A, 23A: 3177 (Dec 1992).
The IEA Large Coil Task, Fus. Eng. and Des., R. Conn ed, North-Holland, Amsterdam, 7 (Sept 1988).
M. Tamura, Hot def. resistance of Ni-base alloys, Japan-US Seminar on Superalloys, 151 (1985).
W.L. Mankins, Rectangular Section Sheathing, private comm., INCO, Huntington, WV (I4 Jan 1992 ).
M.J. Weis, M.C. Mataya, S.W. Thompson and D.K. Matlock, The hot deformation behavior of an as-cast alloy 718 ingot, in:“Superalloy 718 - Metallurgy and Apps.,” E. Loria, ed., TMS, 135 (1989).
J.R. Hensley, Extrusion Procedures, private communication, INCO, Huntington, WV (28 Apr 1993 ).
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Toma, L.S., Hwang, I.S., Steeves, M.M., Randall, R.N. (1994). Thermomechanical Process Effects on Hardness and Grain Size in Incoloy® Alloy 908. In: Reed, R.P., Fickett, F.R., Summers, L.T., Stieg, M. (eds) Advances in Cryogenic Engineering Materials . An International Cryogenic Materials Conference Publication, vol 40. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-9053-5_166
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DOI: https://doi.org/10.1007/978-1-4757-9053-5_166
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