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介绍了一种计算高温合金电子空位数的新方法,并用来预测了5种典型镍基高温合金的组织稳定性及拓扑密排相(TCP相)的析出趋势。结果表明:用电子空位数计算新方法预测合金基体中TCP相的析出趋势比较准确,但不适用于预测合金渗层扩散区TCP相的析出趋势。

A new calculation method of electron vacancy number in Ni-based high-temperature alloy was introduced, and then to predict microstructure stability and precipitation trend of topologically close-packed (TCP) phase in five kinds of typical Ni-based high-temperature alloy. The results show that it was accurate to predict precipitation trend of TCP phase in the substrate of Ni-based high-temperature alloy. However, it was unfit for predicting the precipitation trend of TCP phase in coating diffuse zone.

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