Formation of fully columnar grains with preferential orientation in IN718 superalloy laser metal deposition via CeO2 addition

Key Points

• The addition of CeO2 promotes the formation of columnar grains in IN718 superalloy during laser metal deposition, enhancing its mechanical properties.
• Columnar grains exhibit a preferential <100> orientation, which is critical for optimizing material strength and performance.
• The study uses advanced laser metal deposition techniques to effectively analyze the microstructural changes in superalloys with CeO2.
• These findings could lead to valuable improvements in the manufacture of high-performance components for aerospace applications.