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叙述了北京航空材料研究院 (BIAM)和美国普拉特惠特尼公司 (Pratt& Whitney)对 DD3单晶合金的成本、主要力学性能指标和单晶铸造性能进行的评估。评估认为 :DD3合金有优良的力学性能和良好的铸造性能 ,与第一代单晶合金 PWA1480合金相当 ,且适合低成本生产 ,是一种很有推广应用价值的航空发动机单晶涡轮叶片材料。
Describes the cost, major mechanical properties, and evaluation of single crystal casting properties of DD3 single crystal alloys by Beijing Aeronautical Materials Research Institute (BIAM) and Pratt & Whitney. The evaluation shows that: DD3 alloy has excellent mechanical properties and good casting properties, and the first generation of single crystal alloy PWA1480 alloy, and suitable for low-cost production, is a great value for the promotion of single-crystal aeroengine turbine blade material.