Patent ID: 8216509
Filing Date: 2012-07-10
Classification: C22C,F05C

Abstract:
1. A nickel-base superalloy having a gamma phase and a gamma prime phase, the nickel-base superalloy comprising: nickel at a concentration in a range of from about 60.0 to about 70.0 atomic percent; cobalt at a concentration of about 10 atomic percent; aluminum in a range of about 10 to about 14 atomic percent of which about 13% of a total amount of aluminum is partitioned into the gamma phase of the nickel-base superalloy and about 87% of the total amount of aluminum is partitioned into the gamma prime phase of the nickel-base superalloy; chromium at a concentration in a range of about 0.5 to about 6.0, by atomic percent, of which about 78% of a total amount of chromium is partitioned into the gamma phase of the nickel-base superalloy and about 22% of the total amount of chromium is partitioned into the gamma prime phase of the nickel-base superalloy; and large radius elements comprising molybdenum, rhenium, tantalum, and titanium, and optionally comprising one or more of hafnium, niobium, and precious metal elements, the precious metal elements selected from the group consisting of ruthenium, platinum, iridium and rhodium, and combinations thereof; wherein: a concentration of the large radius elements is disposed in the gamma phase of the nickel-base superalloy being in a range of from about 4.4 to about 6.7, by atomic percent, a concentration of the large radius elements is disposed in the gamma prime phase of the nickel-base superalloy being in a range of from about 4.2 to about 7.0, by atomic percent, molybdenum at a concentration in a range of from about 3.0 to about 10.0 atomic percent of which about 66% of a total amount of molybdenum is partitioned into the gamma phase of the nickel-base superalloy and about 34% of the total amount of molybdenum is partitioned into the gamma prime phase of the nickel-base superalloy, rhenium at a concentration in a range of from about 0.8 to about 2.4 atomic percent of which about 84% of a total amount of rhenium is partitioned into the gamma phase of the nickel-base superalloy and about 16% of the total amount of rhenium is partitioned into the gamma prime phase of the nickel-base superalloy, tantalum at a concentration in a range from about 1.0 to about 4.0 atomic percent of which about 10% of a total amount of tantalum is partitioned into the gamma phase of the nickel-base superalloy and about 90% of the total amount of tantalum is partitioned into the gamma prime phase of the nickel-base superalloy, titanium at a concentration in a range from about 0.05 to about 3.0 atomic percent of which about 10% of a total amount of titanium is partitioned into the gamma phase of the nickel-base superalloy and about 90% of the total amount of titanium is partitioned into the gamma prime phase of the nickel-base superalloy, hafnium at a concentration in a range from about 0 to about 0.1 atomic percent and if present about 10% of a total amount of hafnium is partitioned into the gamma phase of the nickel-base superalloy and about 90% of the total amount of hafnium is partitioned into the gamma prime phase of the nickel-base superalloy, niobium at a concentration in a range from about 0 to about 3.0 atomic percent and if present about 10% of a total amount of niobium is partitioned into the gamma phase of the nickel-base superalloy and about 90% of the total amount of niobium is partitioned into the gamma prime phase of the nickel-base superalloy, precious metal elements ruthenium, platinum, iridium, and rhodium, and combinations thereof, wherein the summed precious metal elements are at a concentration from about 0 to about 3.0 atomic percent and if present, about 46% of a total amount of the precious metal elements is partitioned into the gamma phase of the nickel-base superalloy and about 54% of the total amount of the precious metal elements is partitioned into the gamma prime phase of the nickel-base superalloy, and the nickel-base superalloy has a density of about 9.0 grams per centimeter