Processing window and evaporation phenomena for Ti–6Al–4V produced by selective electron beam melting

Additive manufacturing by selective electron beam melting is a promising way to fabricate complex Ti–6Al–4V components. Sound parts can be realized by applying quite different processing strategies, which have an influence not only on processing time but also on the microstructure and the alloy composition. In this work, the processing window for Ti–6Al–4V is determined for a wide range of scanning speeds and line energies. The influence of the energy input on the resulting heat-affected zone and alloy composition is discussed.