By analyzing the microstructural evolution and creep of NASAIR100 at different stresses in several high temperatures

four dominating parameters of microstructural evolution as well as its relationship with creep curves were found out. While the change of precipitate's thickness and interlamellar spacing during rafting was considered

a microstructural evolution model was established based on the primary rafting model

the deformation process of precipitation

the matrix and the creep curves was obtained. By comparing with the tests

the influence of different microstructural evolution processes on creep curves was given

showing that

if four parameters' change in microstructural evolution at high temperature is considered

the model can simulate the creep of material at different stresses and temperatures preferably and more close to the reality.