Overlapped Weld Bead Analysis on Dissimilar Duplex Stainless Steel-2507 and Inconel-625 Using CMT-WAAM Process

Figure 1. WAAM-CMT Experimental setupFigure 2. WAAM-CMT Produced Overlapping Weldment BeadsFigure 3. A) Schematic diagram for micro-hardness test preparation. 3B) Micro-hardness test values for various regionsFigure 4. Microstructure of DSS-2507 Heat input ranges in (Kj/mm) A) 0.875, C) 1.048 and E) 1.233. Microstructure of IN-625: B) 0.938, D) 1.136, and F) 1.359.Figure 5. XRD Peaks A) SS-304, B) IN-625 and C) DSS-2507Figure 6. A) FESEM image of overlapping zones for both metals IN-625 and DSS-2507; B) IN-625 region; C) DSS-2507 region; D) SS304 substrate region; and E) substrate and Inconel dilution zone.Figure 7. A) EDX image of overlapping zones followed by elemental mapping of Fe, Ni, Cr, and C. B) Elements presence mapFigure 8. EBSD Images on A) Inverse pole figure and A1) Rotation angle, B) Misorientation angle, C) Grain size, D) CSL Boundaries, E) and F) Harmonic texture