Dynamic Model of Grain Growth of GH4169 Superalloy
The grain growth behavior of GH4169 superalloy at 960-1080℃was studied by OM,SEM and other analysis methods.The average grain size of the alloy at different heating temperatures and holding time was obtained,and it was observed that the pinning effect of the δ phase should hinder the grain growth.Considering the pinning effect of δ phase,the GH4169 grain growth dynamic model was established and the grain growth situation was predicted.The comparison results show that the predicted value agrees well with the experimental value,and the model is relatively accurate.The research results can provide theoretical basis for the development of heat treatment technology and practical production and application of GH4169 superalloy.
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