Evaluation of fabrication parameters for foam stainless steel in directed energy deposition

Directed energy deposition (DED), a metal additive manufacturing process, has attracted considerable attention in various industries. In the past few decades, several studies have been conducted to enhance quality of DED-produced parts. Various on powder- and laser-based DED focused eliminating residual pores fabricated parts, which decrease mechanical strength. contrast, this study aims at intentionally increasing produce porous structure metals called as foam metal, realizes lightweight excellent absorption properties. Despite being well-known for their attractive properties, Foam are rarely used due technical difficulties production, requires special devices entails cost. The simplicity process makes it promising approach fabricate because is easy fabrication point by mixing foaming agent, such titanium hydride (TiH2), into material powder. This evaluates stainless steel alloys changing particle size TiH2 powder scanning path obtain optimal conditions enhancing pore dispersion. experimental results show that, when agent small, number distribution increases. Additionally, properties also evaluated through compression experiments, ratio found be higher smaller used.