Casting alloy and directionally solidified article

Details Casting alloy and directionally solidified article Casting alloy and directionally solidified article

1977-12-21

1979-10-02

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75171, 415212A, 428678, C22C 1907

Patent

active

041697260

ABSTRACT:
An improved Ni-Co-Cr base casting alloy is particularly useful as a directionally solidified article in the form of a gas turbine blade tip portion to provide resistance to the combination of oxidation, sulfidation and thermal fatigue at elevated temperatures. The alloy base is enhanced through the alloying additions of Ta, Al, W, C, Si and optionally La.

REFERENCES:
patent: 3418111 (1968-12-01), Herchenroeder
patent: 3582320 (1971-06-01), Herchenroeder
patent: 3591371 (1971-07-01), Hatwell
patent: 4080202 (1978-03-01), Fukui et al.

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