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研究了使用 Ca O坩埚在 VIM法精炼 Ni基高温合金过程中 N的变化规律及加 Al对脱 N的影响 ,初步分析了脱 N的影响因素及机理。
The variation of N and the effect of Al on de-N during the refining of Ni-based superalloy using CaO crucible by VIM method were studied. The influencing factors and mechanism of de-N formation were preliminarily analyzed.