Low temperature magnetic treatment of ferromagnetic materials

Details Low temperature magnetic treatment of ferromagnetic materials Low temperature magnetic treatment of ferromagnetic materials

1974-12-23

1976-06-15

Satterfield, Walter R.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148125, C21D 104

Patent

active

039635333

ABSTRACT:
In accordance with a preferred embodiment of this invention, ferromagnetic, polycrystalline, iron-based materials are subjected to an alternating magnetic field at low temperatures. This treatment provides improved mechanical properties and resistance to corrosive attack. It is believed that this improvement is due to a modification in the dislocation density and distribution in the material. More specifically, it is believed that this method causes a significant reduction in the dislocation density and thereby produces a more perfect crystalline lattice structure.

REFERENCES:
patent: 2445294 (1948-07-01), Nelson
patent: 2958618 (1960-11-01), Allen
patent: 3095319 (1963-06-01), Williams
patent: 3188248 (1965-06-01), Bassett
patent: 3360943 (1968-01-01), Schoenfeld et al.
Bozorth, R., Ferromagnetism, New York, 1951, pp. 117-120 and 717-720.

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