| Abstract Scope |
The ultimate goal of this study was to find optimum process parameters for printing AISI 8620 steel using direct energy deposition (DED). This was done so that solid mechanical properties (tensile and impact) specimens could be printed and tested. Subsequent to printing, the specimens were subjected to a heat treatment at 900℃ for 2 hours. Material characterization, which includes microstructural analysis, and mechanical properties testing was conducted. It was found that the microstructure in heat treated condition had a mixture of pearlite and ferrite and these phases are also known to be present for AISI 8620 steel that has been conventionally manufactured. Additionally, with regards to the mechanical properties this study found that the mechanical properties of 3D printed AISI 8620 steel are superior to the one that has been conventional manufactured.
Keywords: AISI 8620 steel, DED, Heat treatment, Material characterization |