The Analysis of Aluminum Alloy Microstructure Changes in Strong Alternating Magnetic Field

摘要

The change of aluminum alloy microstructure before and after strong alternating magnetic treatment in the aluminum alloy LY12 after the thermal plastic figuration is studied in experimental ways using strong alternating magnetic field generator. By comparing microstructure before and after strong alternating magnetic treatment, the changes of microstructure component organization is analyzed to make further analysis of the organizational factors that leads to aluminum alloy LY12 microstructure's refinement after thermal plastic figuration caused by alternating magnetic field. As the hard aluminum alloy, LY12 has been widely applied in many engineering fields. Currently magnetic treatment methods have been used to influence the phase transformation of metal solidification process as well as to improve mechanical performance of steel materials by improving the residual stress in steel. While, there are few researches on the aspect of ameliorating microstructure and properties of solid aluminum alloy material. This passage analyzes aluminum alloy microstructure after strong alternating magnetic treatment from such aspects as precipitation phase, dislocation and pinprick to discuss and study the changes of aluminum alloy performance.