Nickel based superalloy with high volume fraction of precipitate phase
A process includes solution heat treating a nickel based superalloy with greater than about 40% by volume of gamma prime precipitate to dissolve the gamma prime precipitate in the nickel based superalloy; cooling the nickel based superalloy to about 85% of a solution temperature measured on an absolute scale to coarsen the gamma prime precipitate such that a precipitate structure is greater than about 0.7 micron size; and wrought processing the nickel based superalloy at a temperature below a recrystallization temperature of the nickel based superalloy. A material includes a nickel based superalloy with greater than about 40% by volume of gamma prime precipitate in which the precipitate structure is greater than about 0.7 micron size.
1. A material, comprising:
a nickel based superalloy with greater than about 40% by volume of gamma prime precipitate in which the precipitate structure is greater than about 0.7 micron size, wherein the nickel based superalloy includes rhenium and about 8-12.5% tantalum.
2. The material as recited in claim 1 , wherein the nickel based superalloy includes about 50% by volume of gamma prime precipitate.
3. The material as recited in claim 1 , wherein the nickel based superalloy has been subjected to isothermal over-aging.
4. The material as recited in claim 1 , wherein the nickel based superalloy has been subjected to a wrought process.
5. The material as recited in claim 1 , wherein the nickel based superalloy has been subjected to a solution heat treatment and a low temperate heat treatment.