Our characterizations of microstructures, precipitate distributions and types of precipitates by metallographic techniques and transmission electron microscopy support our simulation results on precipitate sizes and distributions, such as bimodal to multimodal particle distribution in some solution-treated single-crystal Ni-base alloys, evolving during continuous cooling.

 


 

Figure1: Energy filtered transmission electron microscopy (EFTEM) picture of the multimodal gamma prime precipitate distribution.

 

 

Figure2: Simulated multi-modal distribution of gamma´ precipitates during continuous cooling with 0.1°C/s in technological Ni-base superalloy Udimet720.

 

 

Figure3: Simulated size of secondary precipitates in Udimet720 compared with experiments.