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Materials Science in Additive Manufacturing Y O influence in heat-treated LPBF IN718 composite
2 3

Figure 4. Dimensions of the tensile coupons used. The building direction is pointing out of the page.

A B

C

Figure 5. Scanning electron microscopy images of the microstructures of samples AP-0 (A) and AP-Y (B). EDX analysis of the phases in sample AP-Y (C).

long chain morphology and several nano-sized particles According to the phase transformation route during
distributed throughout the microstructures. EDX analysis solidification of IN718, which is L ⇒ L + γ ⇒ L + γ +
of sample AP-Y (Figure 5C) shows that the long chain NbC ⇒ L + γ + NbC + Laves , the Laves phase is the last
[28]
phase consists of primarily Nb and Mo. On the other hand, phase to form when there is a high concentration of Nb
the nano-sized particles are made up of primarily Ti, N, and Mo in the liquid melt due to the low solubility limit
[29]
and Nb. of these elements in IN718 . Due to the long chain phase

Volume 1 Issue 4 (2022) 5 https://doi.org/10.18063/msam.v1i4.25