Gas turbine nozzle having superior thermal fatigue resistance

Details Gas turbine nozzle having superior thermal fatigue resistance Gas turbine nozzle having superior thermal fatigue resistance

1982-09-08

1984-08-14

Dean, R.

Metal treatment

Stock

Age or precipitation hardened or strengthened

148158, 148162, 148419, C22C 1905

Patent

active

044655304

ABSTRACT:
Disclosed in a gas turbine nozzle having a superior thermal fatigue resistance. The gas turbine nozzle is made of a cast alloy consisting essentially of 0.1 to 1 wt % carbon, 0.1 to 2 wt % silicon, 0.1 to 2 wt % manganese, 20 to 35 wt % chromium, 0.001 to 0.1 wt % boron, 5 to 15 wt % of at least one of tungsten and molybdenum, 16 to 35 wt % cobalt and the balance nickel. The alloy has a heat-treated structure in which eutectic carbides and secondary carbides are dispersed in the matrix.

REFERENCES:
patent: 4283234 (1981-08-01), Fukui et al.

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