Numerical simulation and prediction of solidification structure and mechanical property of a superalloy turbine blade

摘要: A Ni-based superalloy gas turbine blade was chosen as the test casting. The grain size, secondary dendrite arm spacing and Vickers hardness of casting were simulated also measured by using a software package. comparison indicates that there is good agreement between results measured. By varying conditions, calculated show with decrease pouring temperature size increases. With increase preheated mould temperature, decreases. However, higher in would be more uniform. This numerical simulation offers useful tool for predicting solidification structures mechanical properties castings.