Lamellar Spacing Modelling for LPBF Aluminum Parts

The high cooling rates reached during metal additive manufacturing (MAM) generate microstructures very different from those obtained by other conventional methods. Therefore, research about the modeling of this type microstructure is great interest to MAM community. In work, prediction lamellar spacing an AlSi10Mg sample manufactured laser powder bed fusion (LPBF), presented. A multiscale approach used, combining a CALPHAD (Computer Coupling Phase Diagrams and Thermochemistry) model predict material properties, with macroscale microscale microstructure. metallographic characterization also included. results prove that strategy followed valid approximation simulate process. addition, it shown use generic simulation software focused on casting processes can be useful in predicting LPBF. Finally, relationship between rate resulting has been established for under specific conditions considered.