Abstract: Disclosed is a method for preparing a directionally solidified TiAl alloy, including: (1) melting and casting a master alloy to obtain a TiAl alloy ingot; (2) processing the TiAl alloy ingot into a sample rod, and placing the sample rod into a refractory metal crucible and then assembling the refractory metal crucible to a directional solidification furnace; (3) vacuumizing the directional solidification furnace, and heating the directional solidification furnace to gradually raise a temperature to exceed a melting point of the sample rod, and conducting heat preservation to melt the sample rod uniformly to obtain a molten TiAl alloy; and (4) directionally pulling the molten TiAl alloy after the heat preservation to allow directional growth to a growth length, stopping the directionally pulling, and taking out an obtained sample to obtain a test rod of the directionally solidified TiAl.

Abstract: An application control method is performed by an electronic device. When determining that a usage region of a target application on the electronic device changes, the electronic device may automatically obtain in time target data of the target application that matches a changed usage region. The target data is used to change a previous version of the target application to a version that matches the changed usage region. Therefore, the version of the target application is updated to the version in the current usage region of the application, and a user can enjoy a function of the target application in the new region in time, thereby improving user experience.