Inconel 718-W7Ni3Fe bimetallic structures using directed energy deposition-based additive manufacturing

Radial bimetallic structures via wire arc directed energy deposition-based additive manufacturing

“…At the same time, most investigations are confined to single material compositionsand metal AM is well positioned to produce complex multi-material systems 14 . The versatility of bimetallic-capable additive technology expands the design space by exploiting unique constituent material characteristics in as-built structures 15,16 . Powder-based DED is particularly suitable for creating such bimetallic structures, with various powder compositional variants easily created to promote specifically designed functionalities [17][18][19] .…”

“…Part quality improvement is anticipated through hybrid machining capability, improved path planning, parameter optimization, thermal management, and deposition mechanics 22,23 . Here also, bimetallic optimization in material type and application-specific material combinations are beginning to be addressed, promoted by the consistent and reliable deposition of wire-based feedstock 14,15,17,[24][25][26][27] .…”

“…Interestingly, it appears that bimetallic DED-arc research is most commonly explored in depositions characterized by horizontal compositional variation or single interfaces in the vertical orientation 15,17,[24][25][26][28][29][30] . Representative of the many studies, Ahsan et al demonstrate successful multi-material DED-arc functionality in depositing low-carbon steel on top of stainless steel in a thin-walled structure 24 .…”