In this work, the effects of printing path switching (0° and 90°) at high linear energy density on the grain structure transition and mechanical properties of directed energy deposition-arc (DED-Arc) Inconel 625 alloys were explored. Microstructural analysis on the DED-Arc 625 with near-equiaxed grains under tensile loading revealed that the deformation initially occurs through planar dislocation glide, followed by the formation of dislocation walls and ‘locking-clamping' structures, which contribute to strain hardening. The interlayer interfaces did not induce adverse effects on mechanical performance. Additionally, the near-equiaxed grain structure maintained superior mechanical properties at elevated temperatures up to 700 °C. This work explores the impact of printing path switching on the grain structure transition and mechanical properties of Inconel 625 alloy manufactured by DED-Arc. The deformation mechanisms and the influence of layer interfaces on the performance of DED-Arc Inconel 625 with near-equiaxed grains were examined and the high temperature performance of the fabricated components was evaluated.

In this work, the effects of printing path switching (0° and 90°) at high linear energy density on the grain structure transition and mechanical properties of directed energy deposition-arc (DED-Arc) Inconel 625 alloys were explored. Microstructural analysis on the DED-Arc 625 with near-equiaxed grains under tensile loading revealed that the deformation initially occurs through planar dislocation glide, followed by the formation of dislocation walls and ‘locking-clamping' structures, which contribute to strain hardening. The interlayer interfaces did not induce adverse effects on mechanical performance. Additionally, the near-equiaxed grain structure maintained superior mechanical properties at elevated temperatures up to 700 °C. This work explores the impact of printing path switching on the grain structure transition and mechanical properties of Inconel 625 alloy manufactured by DED-Arc. The deformation mechanisms and the influence of layer interfaces on the performance of DED-Arc Inconel 625 with near-equiaxed grains were examined and the high temperature performance of the fabricated components was evaluated.

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.