DZ22合金具有较高的中、高温性能,与国外著名的定向合金PWA 1422相当。它的成分以PWA 1422为基础,通过试验确定了更合适的Hf、C和Zr含量范围。现行的母合金熔炼工艺和铸件定向工艺是可靠的、稳定的。经过专门处理的返回料可以应用。在定向凝固过程中的铸型移动速度对零件的结晶取向和组织有较大影响。提高固溶热处理温度对高温纵向持久寿命和中温横向持久寿命有相反的作用。批生产实践证明:DZ22合金不仅具有较高的力学性能,而且具有良好的铸造、焊接和磨削加工性能,是制造先进航空发动机和地面燃气涡轮用的带有复杂薄壁内冷通道的涡轮叶片的理想材料。 DZ22 alloy has high medium and high temperature performance, which is equivalent to the well-known foreign directional alloy PWA 1422. Its composition, based on PWA 1422, has been experimentally determined to be more suitable for the Hf, C and Zr content ranges. The current master alloy smelting process and casting orientation process is reliable and stable. After processing the return material can be applied. The casting speed during the directional solidification has a great influence on the crystal orientation and microstructure of the part. Increasing the temperature of the solution heat treatment has the opposite effect on the long-term high-temperature long-term life and the long-term temperature in the horizontal direction. Batch production practice has proved that: DZ22 alloy not only has high mechanical properties, but also has good casting, welding and grinding process performance, is the manufacture of advanced aircraft engines and ground gas turbines with thin-walled internal cooling channel with thinner turbine blades The ideal material.