分析了NASAIR100在高温下不同应力和温度的蠕变及细观结构演化的异同,得到了材料4个主要的细观结构演化参数及其与蠕变的对应关系,在筏化模型的基础上建立了计及沉淀相筏化过程中厚度和基体通道宽度变化的细观结构演化模型,得到材料沉淀相和基体的细观演化过程及蠕变.结合试验结果,给出了不同细观演化方式对蠕变曲线的影响.在高温下同时考虑基体和沉淀相的4个细观参数变化可以使模型更贴近细观实际,并能较好地模拟材料在不同应力和温度下的蠕变. The similarities and differences of creep and meso-structure evolution of NASAIR100 at different temperatures and temperatures are analyzed. Four main mesoscopic evolution parameters and corresponding relationships with creep are obtained. Based on the model, The mesoscopic evolution of the precipitated phase and the matrix and the creep were obtained considering the thickness of the precipitated phase and the change of the width of the channel in the matrix. The results show that Creep curve.Considering the changes of the four mesoscopic parameters of the matrix and the precipitated phase at high temperature, the model can be closer to the mesoscopic reality and can better simulate the material creep under different stress and temperature.