Nickel-base alloy

Abstract

A nickel-base alloy includes, in weight percent, up to about 0.10 percent carbon; about 12 up to about 20 percent chromium; up to about 4 percent molybdenum; up to about 6 percent tungsten, wherein the sum of molybdenum and tungsten is at least about 2 percent and not more than about 8 percent; about 5 up to about 12 percent cobalt; up to about 14 percent iron; about 4 percent up to about 8 percent niobium; about 0.6 percent up to about 2.6 percent aluminum; about 0.4 percent up to about 1.4 percent titanium; about 0.003 percent up to about 0.03 percent phosphorous; about 0.003 percent up to about 0.015 percent boron; nickel; and incidental impurities. The sum of atomic percent aluminum and atomic percent titanium is from about 2 to about 6 percent, the ratio of atomic percent aluminum to atomic percent titanium is at least about 1.5, and the atomic percent of aluminum plus titanium divided by the atomic percent of niobium equals about 0.8 to about 1.3. The nickel-base alloy may be provided in the form of an article of manufacture, such as, for example, a disk, a blade, a fastener, a case, or a shaft. A method for making a nickel-base alloy also is disclosed. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.