In-situ nitrogen strengthening of selective laser melted Ti6Al4V with superior mechanical performance

The in-situ strengthening approach has attracted increasing attention in the selective laser melting (SLM) of high-performance alloy. In the present work, the argon-nitrogen (Ar-N2) reactive atmosphere was introduced in the SLM of Ti6Al4V alloy to achieve in-situ strengthening. The microstructure evolution and mechanical performance were studied under various atmosphere conditions and laser processing parameters, respectively. The results show...