熔体过热处理对一种镍基合金氮含量的影响  

Influence of Melt Superheating Treatment on Nitrogen Content in a Kind of Nickel-base Alloy

作　　者：裴忠冶[1] 田彦文[2] 

机构地区：[1]中国恩菲工程技术有限公司,北京100038 [2]东北大学材料与冶金学院,沈阳110004

出　　处：《有色金属》2011年第2期63-67,共5页Nonferrous Metals

摘　　要：研究在采用CaO坩埚真空感应熔炼的条件下,经不同温度的熔体过热处理后,一种镍基合金中氮含量的变化,并对镍基合金中脱氮机理进行了探讨。结果表明,在采用相同的浇注温度和模壳温度条件下,提高熔体过热处理温度能促进合金的脱氮,且试验值与理论预测值吻合的较好。超过1 790℃时,合金产生吸氮现象。采用稳定性较高的CaO坩埚,合金中氧含量一直保持在较低的水平。The effects of melt superheating treatment on nitrogen content in a kind of nickel-base alloy and the mechanics of denitrogenation in nickel based alloy under the condition of VIM in CaO crucible were investigated.The results show that with the same pouring temperature and mould temperature,melt superheating treatment promotes denitrogenation process of the nickel-base superalloy.Though at the higher temperature of melt treatment,there is an increase of nitrogen content.The content of oxygen is stable on a low level because of the using of CaO crucible.

关 键 词：镍基合金 CAO坩埚 熔体处理 脱氮 

分 类 号：TG132.33[一般工业技术—材料科学与工程]