5th International High Manganese Steel Conference - HMNS 2022

Metal additive manufacturing (AM) received enhanced scientific and industrial importance during the last decades, mostly due to the geometrical flexibility offered by AM. The development of novel, process-adapted metallic alloys is a key for further industrial implementation of AM. We address the computational and experimental development of new high-manganese steels with properties superior to existing steel concepts for AM. Target applications are filigree (sub-mm) lattice structures with enhanced energy-absorption capacity.
On the one hand, computational tools were used to consider the thermodynamics (CALPHAD), process behavior (FEM), solidification behavior (phase-field modelling) and deformation behavior (crystal-plasticity modelling, FEM), enabling a holistic integrated computational materials engineering (ICME) approach. On the other hand, the microstructures and mechanical properties of bulk and lattice-structure specimens were investigated experimentally. The influence of chemical composition within the system Fe-Mn-Al-C and of the AM processing conditions on the process-microstructure-properties-relationships will be discussed.