查看文章

In this work, nonisothermal dissolution of intermetallic Mg₁₇Al₁₂ in Mg-Al alloy has been firstly studied via Differential Scanning Calorimetry-DSC, X-Ray Diffraction-XRD and Scanning Electron Microscope-SEM as well as CALPHAD_based dissolution models and molecular dynamics simulation. The size and volume fraction of Mg₁₇Al₁₂ phase could be predicted via the present kinetic dissolution model and agree well with experimental results. Also, the data-driven screening calculation shows that there is a range of temperature for significantly dissolving Mg₁₇Al₁₂ phase, which could be increased with the increase of heating rate. The evolution of structural order for Mg₁₇Al₁₂ phase has also been performed via molecular dynamics simulation with LAMMPS. The simulated results indicate that the structural order of Mg₁₇Al₁₂ phase during heating is mainly affected by the Al-contained atomic pairs (Al-Al and Al …