Title :
Magnetic and magnetoelastic properties of 18% nickel maraging steels
Author :
Garshelis, Ivan J.
Author_Institution :
Magnetoelastic Devices Inc., Pittsfield, MA, USA
fDate :
9/1/1990 12:00:00 AM
Abstract :
The variation of the magnetic properties of two commercial 18% Ni maraging steels with processing conditions is studied. These steels, notable for their ultra-high mechanical strength properties, do not exhibit the conventional correlation between mechanical and magnetic hardness. Stress is found to have large softening effects on the magnetic properties regardless of metallurgical conditions. This apparently stems from the substantial magnetostriction and relatively low crystal anisotropy of the predominantly Ni-Fe martensitic matrix. In view of this unusual combination of high strength and stress sensitivity, applications in transducers and as cores of specialized apparatus are foreseen
Keywords :
alloy steel; ferromagnetic properties of substances; magnetic hysteresis; magnetic susceptibility; magnetisation; magnetoelastic effects; magnetostriction; Ni maraging steels; Ni-Fe martensitic matrix; crystal anisotropy; magnetic cores; magnetic hardness; magnetic properties; magnetisation; magnetoelastic properties; magnetostriction; martensitic microstructure; mechanical hardness; mechanical strength; mechanical treatment; metallurgical conditions; processing conditions; quasistatic hysteresis loops; reversible susceptibility; softening effects; stress sensitivity; temperature aging process; tensile stress; thermal treatment; transducers; Anisotropic magnetoresistance; Magnetic anisotropy; Magnetic properties; Magnetostriction; Mechanical factors; Nickel; Perpendicular magnetic anisotropy; Softening; Steel; Stress;
Journal_Title :
Magnetics, IEEE Transactions on
