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研究了Ｍ１７Ｆ合金无余量精铸空心气冷叶片气孔形成规律。发现型芯上的积碳是形成大面积蜂窝状气孔的主要原因；合金元素Ｔａ提高了熔融合金的化学活性，是形成气孔的合金因素；型芯中锆英石的分解产物无定形ＳｉＯ２，是促成气体反应的工艺因素
The formation of pores in M17F alloy hollowless-cooled gas-cooled blades was studied. Found that the core of the carbon deposition is the main reason for the formation of large-scale honeycomb-shaped pores; alloying elements Ta improve the chemical activity of the molten alloy is the formation of stomatal alloy factor; cristobalite decomposition amorphous SiO2, is Factors contributing to the gas reaction