Printability disparities in heterogeneous material combinations via laser directed energy deposition: a comparative study

Abstract

Highlights Printability disparities of heterogeneous alloy pairs are elucidated from the macro and micro aspects. Track formation of homogeneous material combinations is accompanied by more intense melt flow motion. Microstructure diversity is characterized by the differences in interfacial/microstructural morphology and grain growth. Microhardness differentiation is interpreted by the melt pool flow and resulting composition intermixing.