Research on the melting process of TC17 titanium alloy ingots based on MeltFlow VAR
TC17 titanium alloy is widely used in aerospace and other fields due to its excellent mechanical proper-ties,thermal stability,and fatigue resistance.However,the phenomenon of element segregation in the vacuum consum-able arc melting process of this alloy affects the performance of the ingot and limits its application and development.This article uses the Multi Field Coupled Remelting Process Simulation and Optimization Software(MeltFlow VAR)to simu-late the melting current,stable arc current,and other melting process parameters during the vacuum self consumption melting process of TC17 titanium alloy ingots.The shape of the melt pool and the distribution of element concentration under different parameters are studied,and the simulation process is used to prepare a large specification TC17 alloy ingot with a diameter of 640mm for verification.The results indicate that reducing the melting current and stabilizing arc cur-rent appropriately can make the distribution of Cr and Mo elements in TC17 titanium alloy ingots uniform,thereby effec-tively improving the phenomenon of element segregation.Through tracking and sampling verification of subsequent in-gots,it was found that the TC17 titanium alloy ingots produced in this experiment had uniform composition and no ob-vious structural defects were found.
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