Enhancement of the high-temperature strength of laser directed energy deposited IN738 through rational doping of nano-Y₂O₃

Key Points

• Improved high-temperature strength was achieved, demonstrating the effectiveness of nano-Y₂O₃ doping.
• The mechanical performance showed approximately a 15% increase at elevated temperatures, indicating significant enhancement.
• Observational analysis focused on the microstructural properties following laser directed energy deposition with dopants.
• These findings may enable the development of stronger materials for use in high-temperature applications.