A mathematical model for prediction of microporosity in aluminum alloy A356

作者：Bahmani Ahmad^*; Hatami Nader; Varahram Naser; Davami Parviz; Shabani Mohsen Ostad

来源：International Journal of Advanced Manufacturing Technology, 2013, 64(9-12): 1313-1321.

DOI：10.1007/s00170-012-4102-7

• Modeling
• Simulation
• Microporosity
• Gas segregation
• Dendrite arm spacing

In the present work, a mathematical model was developed based on finite difference method to predict the microporosity distribution in A356 aluminum alloy casting. Heat, mass, and gas conservation equations were solved in this model. Moreover, Darcy%26apos;s equation was considered in the mushy zone. Results show that the distribution and concentration of microporosities in cast parts vary with both cooling rate and initial gas content. Simulation results were compared with experimental data where proportionally good agreement with experimental results was found. Finally, a complex cast part was simulated presenting the ability of the model to predict the porosities in industrial cast parts.

• 出版日期2013-2