Landolt-Börnstein - Group III Condensed Matter

7.1.5.2 Fe- or Co-based ferromagnetic Elinvar alloys

Abstract

This chapter illustrates Fe-based ferromagnetic Elinvar alloys or Co-based ferromagnetic Elinvar alloys. Composition in [wt%] of Fe-Ni-based Elinvar-type alloys, density d, melting point Tm, Curie temperature Tc, electrical resistivity ρ, thermal expansion coefficient α, Young’s modulus E, its temperature coefficient e, and shear modulus G of Fe-Ni-based commercial Elinvar-type alloys are tabulated. Young’s modulus at various temperatures as dependent on composition of Fe-Ni alloys, and fractional change δE/ERT of Young’s modulus with temperature for various compositions of Fe-Ni alloys, and effect of magnetic field on Young’s modulus are illustrated. Temperature dependence of the shear modulus, composition dependence of the temperature coefficient of the shear modulus of fcc Fe-Ni alloys, magnetization curve B versus effect of magnetic field H on Young’s modulus and its temperature coefficient, effect of operating frequency f on the temperature coefficient of Young’s modulus, effect of cold-working and the subsequent annealing for 5h at various temperatures on Young’s modulus are shown. Relation between temperature coefficient of Young’s modulus and heating temperature Ta of Ni-Span C alloy composition, temperature dependence of the normalized shear modulus and temperature coefficient g of shear moduli of Fe-36 wt%Ni-Cr alloys, influence of Mo content on the Young’s modulus and fractional change of Young’s modulus with temperature of Fe-Ni-Mo alloys are figured out. Composition, thermal expansion coefficient, Young’s modulus and shear modulus, and their respective temperature coefficients, for Co-Fe-based Elinvar-type alloys are also tabulated.

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Title
7.1.5.2 Fe- or Co-based ferromagnetic Elinvar alloys
Book Title
Magnetic Alloys for Technical Applications. Soft Magnetic Alloys, Invar and Elinvar Alloys
In
7.1.5 Elinvar alloys
Book DOI
10.1007/b91565
Chapter DOI
10.1007/10065028_63
Part of
Landolt-Börnstein - Group III Condensed Matter
Volume
19I1
Editors
  • H. P. J. Wijn
  • Authors
  • K. Fukamichi
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