|About this Abstract
|7th World Congress on Integrated Computational Materials Engineering (ICME 2023)
|Cellular Automaton Simulation of Microstructure and Porosity Formation During Solidification Processing of Aluminum Alloys
|Michael Moodispaw, Buwei Chen, Nicole Trometer, Alan A. Luo
|On-Site Speaker (Planned)
|Alan A. Luo
Simulation of microstructure and hydrogen-induced porosity formed during solidification of aluminum-based alloys is a critical link in integrated computational materials engineering (ICME) design and manufacturing of solidification products such as castings, welds or additively manufactured components. A three-dimensional cellular automaton (CA) model has been developed to predict the formation and evolution hydrogen porosity coupled with grain growth during solidification of a ternary Al-Si-Mg alloy. The simulation results fully describe the concurrent nucleation and evolution of both solidification grain structure and hydrogen porosity, yielding the morphology of multiple grains as well as the porosity size and distribution. This model has been applied and validated in gravity and high pressure die casting, laser welding and laser powder bed fusion additive manufacturing processes. These grain structure and porosity models have been validated by X-ray micro computed tomography (micro-CT), scanning electron microscopy (SEM) and optical metallography.