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本文首次提出了功能梯度材料当量热导率的概念，并推导了当量热导率的计算方法，该方法的确定不仅可以指导FGM的成分、组织和结构设计，而且还可以加速FGM实用化的进程，具有重大的理论意义和巨大的实用价值.
This paper presents the concept of equivalent thermal conductivity of FGM for the first time and deduces the calculation method of equivalent thermal conductivity. This method can not only guide the composition, structure and structure design of FGM, but also accelerate FGM practical process , Has great theoretical significance and great practical value.