Refinement of primary Si in the bulk solidified Al-20 wt.%Si alloy assisting by high static magnetic field and phosphorus addition

Effects of high static magnetic field (HSMF) on microstructures and solidification process of Al-20 wt.%Si alloys with and without phosphorus addition (P addition) have been investigated. The size of primary Si (SPS) is refined continuously as the increase of magnetic flux density (B), and the minimum SPS value is about 15.4 μm when B is 29 T without P addition. However, the SPS decreases firstly and then increases as the increasing B combined...