Metal treatment – Compositions – Heat treating
Patent
1974-10-17
1976-08-24
Dean, R.
Metal treatment
Compositions
Heat treating
75171, C22C 1907
Patent
active
039765164
ABSTRACT:
In a cast anisotropic body comprising an at least partially monovariant ternary eutectic alloy of Co, Cr and C, the eutectic part of the alloy comprising a matrix phase consisting substantially of Co containing at least Cr in a solid solution and a dispersed phase consisting substantially of a carbide of the formula Cr.sub.7.sub.-x.sub.-y Co.sub.x Me.sub.y C.sub.3 wherein x is a number capable of values from 0 to 2 and y is a number capable of values from 0 to 4, and wherein Me is an additional element contained in the matrix and/or dispersed phase, the dispersed phase consisting essentially of a plurality of high strength carbide fibers oriented in substantial alignment, and embedded in the matrix phase, the improvement which comprises the additional element Me being selected from the group consisting of manganese, aluminum, yttrium, boron, one or more rare earths and mixtures thereof, wherein said additional element Me is present in an amount of from 0.1 to 15% by weight based on the total weight of the composition.
REFERENCES:
patent: 3552953 (1971-01-01), Lemkey et al.
patent: 3564940 (1971-02-01), Thompson et al.
BBC Brown Boveri & Company Limited
Dean R.
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