Numerical Simulation Analysis of Inclusion Evolution During VAR Melting of TC4 Titanium Alloy
Author of the article:FU Hangtao;WANG Kaixuan;ZHAO Xiaohua;LOU Meiqi;SUN Feng;LIU Xianghong
Author's Workplace：Western Superconducting Technologies Co.,Ltd.,Shaanxi Aviation Materials Engineering Laboratory,Xi'an Key Lab.of Special Titanium Alloy Preparation and Simulation Technology,Xi'an 710018,China;School of Materials Science and Engineering,Northwestern Polytechnical University,Xi'an 710072,China
Key Words：titanium alloys vacuum arc remelting inclusion numerical simulation
Abstract：The motion and distribution of inclusions with different relative densities and diameters during vacuum consumable arc melting(VAR)of TC4 titanium alloy ingots were simulated by MeltFlow software.The ingots were melted by adding titanium sponge to the electrode rod and forged into the bar to carry out the experimental verification,and the ultrasonic nondestructive testing was used to check and determine the defects.The results show that the motion and distribution of inclusions with different relative densities and diameters are obviously different during ingot smelting.Large oxide inclusions can not be completely melted after a smelting,and it can finally form defects and can be detected in the bar.
