Article comprising a nickel-base alloys heat treated, nickel-based alloys, and nickel-based alloys

摘要

Method of heat treating a 718-type nickel-base alloy, and heating the 718-type nickel-base alloy to a heat treatment temperature, up to 25 weight percent δ phase grains boundary precipitates, as well as in the whole of the equilibrium concentration, or near-equilibrium concentration in the nickel-base alloy during a sufficient heat treatment time to form the γ 'phase and a γ "phase, .718-type nickel-base alloy containing and maintaining the alloy at a heat treatment temperature is air cooled. The present disclosure, the near-equilibrium concentrations δ also I include 718-type nickel-based alloy containing phase grains boundary precipitates as well as a total of up to 25% by weight γ 'phase and γ "phase precipitates. Alloy according to the present disclosure, for example supersonic aircraft and surface plate of thermal protection systems for spacecraft, it may be included honeycomb core element, and articles of manufacture of honeycomb panel or the like. .BACKGROUND 4