PSI - Issue 53

Mariana Cunha et al. / Procedia Structural Integrity 53 (2024) 386–396 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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a)

b)

c)

e)

d)

f)

Figure 7- OM images of the deposited material; (a) being closest to the base plate and (f) closest to the topmost region (as mentioned in Figure 5)

Figure 8- Chemical Composition Profile for the printed multi-layer

The microhardness testing (as shown in Figure 9) of the printed cross-section was conducted to relate the evolution of microstructure (observed in Figure 7) with the mechanical properties of the build. The decline of micro-hardness from the dilution zone towards the top layer well relates with the evolution of microstructure from martensitic microstructure in the bottom layer to a ferrite dominant microstructure in the top layer.