Process chain simulation of laser powder bed fusion including heat treatment and surface hardening

Additive manufacturing (AM) has enabled the creation of geometrically complex parts for a range industries. However, nature AM often requires multiple post processing techniques to be carried out reach desired material properties or required surface finish. This involves heat treatment (HT), shot peening (SP) laser shock (LSP). To date, hardly any process chain modelling been on applications with AM. investigation focuses finite element (FE) complete an impeller made IN718, including AM, HT, LSP and SP processes. The particular applied build is powder bed fusion (L-PBF). Each FE validated individually against experimental data before being chain. from each mapped next in investigate combined effects techniques. Results have shown that high tensile residual stresses induced by can reduced approximately 75% applying HT. processes further modify remaining after HT inducing layer compressive at surface. In summary, this research work demonstrated simulation chains using sufficiently mature support product development industrial components.