**4. Conclusions**

This study carried out laser welding of AISI 304 stainless steel, specifically 0.4 mm and 0.5 mm thick sheets, via the laser-melting deposition (LMD) technique. The welding was carried out without and with filler material. Inconel 718 powder particles were used as filling material in the joints welded. Metallographic experiments were conducted to analyze the defects and pores in the cross-sections. These welds were subjected to X-ray analyses to identify the weld quality in weld uniformities. Based on the study, the following conclusions are deduced:



**Author Contributions:** Conception, M.A.M., D.C., S.M., M.I., I.N.M. and A.C.P.; literature study, M.A.M., D.C. and S.M.; experiments, D.C., S.M., M.I. and A.C.P.; writing—review and editing, M.A.M., M.I., I.N.M. and A.C.P.; funding acquisition and project administration, I.N.M. The authors agree to publish the current version of the manuscript. All authors have read and agreed to the published version of the manuscript.

**Funding:** M.A.M. received financial support from the European Union's Horizon 2020 (H2020) research and innovation program under the Marie Skłodowska–Curie gran<sup>t</sup> agreemen<sup>t</sup> (no. 764935). This research study has been conducted in the framework of POC-G, contract no. 135/2016, and UEFISCDI 45/2021. This work was also supported by grants from the Romanian Ministry of Education and Research, CNCS-UEFISCDI, project numbers PN-III-P4-ID-PCE-2020-1634 and PN-III-P2-2-1-PED-2019-3953, within PNCDI III, and the Romanian Ministry of Education and Research under the Romanian National Nucleu Program LAPLAS VI, contract no. 16N/2019.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Not applicable.

**Acknowledgments:** The authors want to thank the NIKO Auto S.R.L company for providing the metal sheets for the welding experiments.

**Conflicts of Interest:** The authors declare no conflict of interest.
