Multiphysics modeling of nitrogen transport and composition evolution during PBF-LB/M of nitrogen-containing austenitic stainless steel

Key Points

• Transport mechanisms reveal nitrogen movement within austenitic stainless steel during processing, affecting overall material properties.
• Key evidence shows that the composition evolves primarily due to thermal effects from the laser beam, impacting performance.
• Theoretical modeling illustrates the dynamics of nitrogen transport and composition evolution during powder bed fusion processes.
• Highlights the importance of understanding nitrogen behavior, suggesting optimized manufacturing strategies for enhanced material performance.