Iron-base amorphous alloys having improved fatigue and toughness

Details Iron-base amorphous alloys having improved fatigue and toughness Iron-base amorphous alloys having improved fatigue and toughness

1984-11-15

1986-04-22

Sheehan, John P.

Metal treatment

Compositions

Heat treating

148 3155, 75126B, 75126C, 75126D, 75126E, 75126F, 75126H, 75126P, 75126Q, 75124, 75125, C22B 3802

Patent

active

045840342

ABSTRACT:
An iron-base amorphous alloy is described, having improved fatigue and toughness characteristics consisting essentially of from 6 to 16 atom % Si, from 7.5 to 16 atom % B, and from 2 to 9 atom % Cr, provided that the composition ranges of Si, B, and Cr are within the quadrangles defined by a-b-c-d of FIG. 1, and e.sub.1 -f.sub.1 -g.sub.1 -h.sub.1 of FIG. 2, and the balance being substantially Fe. In addition to improved fatigue and toughness characteristics, the amorphous alloy has excellent tensile break strength, heat resistance, corrosion resistance and electromagnetic properties, and is therefore very useful for industrial reinforcements and electromagnetic materials.

REFERENCES:
patent: 4450206 (1984-05-01), Ames et al.
patent: 4473401 (1984-09-01), Masumoto et al.
patent: 4473413 (1984-09-01), Nathasingh et al.
patent: 4495691 (1985-01-01), Masumoto et al.
patent: 57-169068 (1982-10-01), JPX

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