Ni-Cr-W alloy having improved high temperature fatigue strength

Details Ni-Cr-W alloy having improved high temperature fatigue strength Ni-Cr-W alloy having improved high temperature fatigue strength

1982-06-17

1984-08-07

Dean, R.

Metal treatment

Process of modifying or maintaining internal physical...

Chemical-heat removing or burning of metal

148410, C22F 110, C22C 1905

Patent

active

044642105

ABSTRACT:
An Ni-Cr-W alloy having improved high temperature fatigue strength and superior creep rupture strength. The alloy contains, by weight, less than 0.1% of C, 21 to 26% of Cr, 16 to 21% of W and more than 50% of Ni. The alloy has a structure in which the austenite has a mean grain size larger than 100 .mu.m and in which the primary solid solution of W of body centered cubic crystal is precipitated preferentially in the austentite grain boundary. Disclosed also is a method of producing this alloy.

REFERENCES:
patent: 4006015 (1977-02-01), Watanabe et al.

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