High-strength thermally stable nickel-based alloy

The present application relates to an alloy including, in weight percent, from about 1.3% to about 1.8% aluminum, from about 1.5% to about 4.0% cobalt, from about 18.0% to about 22.0% chromium, from about 4.0% to about 10.0% iron, from about 1.0% to about 3.0% molybdenum, from about 1.0% to about 2.5% niobium, from about 1.3% to about 1.8% titanium, from about 0.8% to about 1.2% tungsten, from about 0.01% to about 0.08% carbon, and balance nickel and incidental impurities. The alloy has a stress fracture life of at least 300 hours at a temperature of 700 DEG C and a pressure of 393.7 MPa (57.1 ksi) and an elongation at room temperature of at least 15% after aging at 700 DEG C for 1000 hours. 本申请涉及一种合金，按重量百分比计，包括：约1.3％至约1.8％的铝、约1.5％至约4.0％的钴、约18.0％至约22.0％的铬、约4.0％至约10.0％的铁，约1.0％至约3.0％的钼，约1.0％至约2.5％的铌，约1.3％至约1.8％的钛，约0.8％至约1.2％的钨，约0.01％至约0.08％的碳，以及平衡镍和附带杂质。该合金在700℃的温度和393.7MPa(57.1ksi)的压力下的应力断裂寿命至少为300小时，且该合金在700℃下老化1000小时后的室温伸长率至少为15％。