Fabrication of Rheological Material of A356 Aluminum Alloy by Electromagnetic Stirring through Vacuum Pump
This study demonstrates fabricating rheological material by EMS system attached vacuum pump, in order to improve mechanical properties of rheoforged products by removing defects such as porosity and oxides arising from rheological forging process. The billet fabricated by EMS in vacuum pressure reduced formation of oxides and porosities of the inner material. The billet fabricated by EMS in vacuum pressure below 56 cm/Hg remarkably reduced porosities, comparing to the EMS in atmospheric pressure.
G. Hirt, A. Rassili, A. Bührig-Polaczek
H.H. Kim et al., "Fabrication of Rheological Material of A356 Aluminum Alloy by Electromagnetic Stirring through Vacuum Pump", Solid State Phenomena, Vols. 141-143, pp. 731-736, 2008