采用材料热力学计算软件Thermo-calc,计算了FGH96合金中的平衡相,并结合显徽组织观察、能谱和相分析,探讨Hf、Zr含量对γ'相和碳化物的影响,及对消除PPB的作用.结果表明:Hf和Zr不会导致产生新相,主要影响MC和γ'相的析出行为与成分.Hf和Zr能显著改变MC型碳化物的组分,增加其热力学稳定性和数量,促进MC型碳化物在合金中的均匀分布,抑制MC向M23C6转变；Hf还可以参与形成γ'相,增加其数量.Hf、Zr有助于消除FGH96合金中的原始颗粒边界(PPB).
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