Cobalt-containing alloys

Details Cobalt-containing alloys Cobalt-containing alloys

1979-09-20

1982-10-12

Dean, R.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75134C, 75134F, C22C 3000

Patent

active

043537421

ABSTRACT:
A wear-resistant alloy, which excluding impurities, has the following composition: (a) about 50 to 70% of cobalt, nickel and iron; (b) 27 to 35% of chromium; (c) 5 to 15% of molybdenum and/or tungsten; (d) 0.3 to 2.25% of carbon and/or boron; (e) 0 to 3% of silicon and/or manganese; (f) 0 to 5% of one or more of titanium, hafnium, zirconium, vanadium, niobium, and tantalum; (g) 0 to 5% of copper, and (h) 0 to 5% of one or more of the following rare earths: lanthanum, cerium, yttrium, and thorium. The cobalt is the range 25 to 40%, and the nickel in the range 4 to 12%. There is from 0 to 7.5% of constituents (f), (g) and (h). The iron is present in a quantity not exceeding 25%. If there is 2% or more of carbon and/or boron, there is more than 30% chromium. (All percentages by weight).
A welding or surfacing consumable which (ignoring the effect of dilution by substrate) is capable of depositing such an alloy may also be made.

REFERENCES:
patent: 2746860 (1956-05-01), Binder et al.
patent: 3421890 (1969-01-01), Baumel
patent: 3425827 (1969-02-01), Baumel
patent: 3582320 (1971-06-01), Herchenroeder
patent: 4078922 (1978-03-01), Magyar et al.

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