本文鉴定含Hf铸造镍基高温合金中的Ni_5Hf相.发现这类合金中存在着下列两种反应: Ni_5Hf+γ(C)→MC_(2)+γ 或 γ′(Hf)+γ(C)→MC_(2)+γ并讨论这些反应对合金组织稳定性的影响.
The Ni_5Hf phase in hafnium-bearing nickle-base cast superalloys has beenexamined. It was found hat the reactions occurring in this series of alloys mightbe described as follows:Ni_5Hf+γ(C)-MC)_(2)+γor '(Hf)+γ(C)-MC_(2)+γThe effects of these reactions on the stability of the alloys have been discussed.
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