Study Progress on Numerical Simulation of Hot Tearing Prediction During Direct Chill Casting of Aluminum Alloys

Hot tearing is a common casting defect during direct-chill casting of aluminum alloys,which is also one of the great challenges to be solved in the industrial production of large-sized,high quality,defect-free aluminum alloy ingots.Although many theories and models have been proposed after decades of investigation,knowledge on the nature of hot tearing is still limited.The study progress on the numerical simulation of hot tearing prediction during direct chill casting of aluminum alloys such as the properties measurement in semi-solid state,the boundary conditions setting,the development of hot tearing criteria and its applications have been summarized in this paper.Moreover,the possible improvements are suggested as well in the present work.