Authors:
Mohammad Ibrahim (University of Agder, Norway),
Tor Oskar Saetre (University of Agder, Norway),
Ragnhild Elizabeth Aune (Norwegian University of Science and Technology, Norway)
Abstract:
In general, silicide-based materials offer efficient improvement of turbines and offshore systems due to their exceptional oxidation, corrosion, and wear resistance. The standard requirement of materials used in these systems is the ability to withstand high temperatures. Nickel silicide (NiSi) is commonly known to possess these abilities, however, its inherent brittleness makes large scale production difficult using standard metal forming techniques. Laser Metal Deposition (LMD) is an Additive Manufacturing (AM) technique similar to cladding that allows pore-free microstructure formation of the metal with refined grains, enabling excellent mechanical properties. In the present study, NiSi16 is deposited on structural steel and nickel substrates, and microstructural development is observed in both cases. The deposited beads are characterised using conventional analytical techniques, i.e., LVFESEM, EDX and XRD, and the results are discussed in the context of changes in chemical composition.
DOI:
https://doi.org/10.59499/WP225372124