Microstructure and nanoindentation creep behavior of IC10 directionally solidified superalloy repaired by laser metal deposition

In this study, the microstructure and nanoindentation creep behavior of IC10 directionally solidified superalloy repaired by laser surface re-melting combined with quasi-continuous-wave laser metal deposition were investigated in detail. It is found that the primary dendritic arm spacing in the deposition layers is far smaller than that in the substrate (400 μm). Along the deposition height direction, the primary dendritic arm spacing increases...