充分发挥固溶强化、沉淀强化、界面强化的作用,科学平衡W、Mo、Ta、Re等高熔点合金元素的含量,研制出第三代单晶高温合金DD9,该合金Re含量低于国外第三代单晶高温合金,综合性能优良,性能达到国外第三代单晶高温合金的水平,合金热处理后组织均匀稳定,工艺性能良好。 Give full play to the role of solid solution strengthening, precipitation strengthening, strengthening the interface, the scientific balance of W, Mo, Ta, Re and other high melting point alloying elements content developed third generation single crystal superalloy DD9, the alloy Re content lower than foreign Three generations of single crystal superalloy, excellent overall performance, the performance reached the level of the third generation of single crystal superalloy abroad, alloy heat treatment after the organization uniform and good process performance.