using appropriate phase to mimic substrate layer in LPBF process
Posted: Fri Feb 02, 2024 9:04 pm
Hello everybody,
I select X20MnAl12-3 as my simulated materials to simulate the solidification process under additive manufacturing conditions. I use Rosenthal solution to generate a temperature profile. The primary phase is ferrite (white color), followed by the growth of austenite (orange color) in the interdendritic region of the ferrite dendrites. The results obtained when using the austenite phase to mimic the substrate layer are shown The large size austenite grains grow in front of the ferrite dendrites by the end of simulation.
However, if the ferrite phase is selected to mimic the substrate layer, the results appear as shown Both simulations use the same temperature file, but the substrate phase differs. The second simulation is considered more realistic. Could you please explain the reason for the appearance of the large size austenite grains in the first simulation results? Thank you in advance.
I select X20MnAl12-3 as my simulated materials to simulate the solidification process under additive manufacturing conditions. I use Rosenthal solution to generate a temperature profile. The primary phase is ferrite (white color), followed by the growth of austenite (orange color) in the interdendritic region of the ferrite dendrites. The results obtained when using the austenite phase to mimic the substrate layer are shown The large size austenite grains grow in front of the ferrite dendrites by the end of simulation.
However, if the ferrite phase is selected to mimic the substrate layer, the results appear as shown Both simulations use the same temperature file, but the substrate phase differs. The second simulation is considered more realistic. Could you please explain the reason for the appearance of the large size austenite grains in the first simulation results? Thank you in advance.