2-D Selector Simulation Studies on Grain Selection for Single Crystal Superalloy of CM247LC

Hang Zhang; Xintao Zhu; Fu Wang; Dexin Ma

doi:10.3390/ma12233829

2-D Selector Simulation Studies on Grain Selection for Single Crystal Superalloy of CM247LC

Materials (Basel). 2019 Nov 21;12(23):3829. doi: 10.3390/ma12233829.

Authors

Hang Zhang¹, Xintao Zhu², Fu Wang¹, Dexin Ma²

Affiliations

¹ State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, Shanxi, China.
² Foundry Institute, RWTH Aachen University, Intzestrasse 5, 52072 Aachen, Germany.

Abstract

In the present work, the single crystal superalloy CM247LC was selected as the research material. By using directional experiments and the cellular automaton finite element (CAFE) model, the process of grain texture evolution in a two-dimensional grain selector was investigated to clarify the mechanism of grain selection in the two-dimensional passage during the process of directional solidification (DS). To optimize single crystal turbine blade production processes, the effects of grain selector geometries (i.e., selector diameter and pitch length, take-off angle) on the microstructure and stray grain were simulated and discussed.

Keywords: CM247LC; directional solidification; grain selector; single crystal.