Summary: DZ4 17G is a nickel-based precipitation hardening directionally solidified columnar superalloy, which is a low-density alloy developed on the basis of K4 17G alloy, and its service temperature is below 980℃. The alloy has high medium temperature strength, good creep resistance, high plasticity, stable structure and low cost. The main products are long-life gas turbine rotor blades, guide blades and other high-temperature parts.
Application and characteristics: DZ4 17G is a patented alloy with independent intellectual property rights. Rotor blades and guide blades of aero-engine gas turbines, and low-pressure ① and ② directional solidification turbine blades of advanced aero-engines have been manufactured in batches.
After long-term aging at 800℃-900℃ for 5000 h- 10000 h, the alloy does not precipitate and its structure is stable.