Fracture and deformation properties of Ni-Fe superalloy in cryogenic high magnetic field environments |
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Authors: | Yoko Yamaguchi Daisuke Sekiya Susumu Kumagai |
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Affiliation: | Department of Materials Processing, Graduate School of Engineering, Tohoku University, Aoba-yama 02, Sendai 980-8579, Japan |
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Abstract: | The present paper includes experimental and analytical data on the fracture properties of a nickel-iron superalloy, a ferromagnetic austenite, at 4 K in magnetic fields of 0 and 6 T. The tensile, notch tensile and small punch tests are employed. A finite element analysis is also performed to convert the experimentally measured load-displacement data into useful engineering information. To interpret the results we review the available theory of the influence of magnetic field on the stress intensity factor for a crack in ferromagnetic materials. |
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Keywords: | Metals (A) Structural materials (A) Liquid helium (B) Mechanical properties (C) Superconducting magnets (F) |
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