Abstract
In this study, the impact property of 3D printed 15-5 stainless steel was investigated at low (77 K), room (298 K), and high temperatures (723 K) using combined experimental and modeling studies. The finite element model was based on the Johnson-Cook phenomenological material model and fracture parameters. The experimental and modeling predicted impact energies are in good agreement. Both the microstructures and impact energy values show that the 3D printed 15-5 stainless steel exhibits brittle behavior at low and room temperatures, but changes to a more ductile behavior at high temperatures.
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