Selective Laser Melting of Commercially Pure Molybdenum by Laser Rescanning

Commercially pure (cp) molybdenum (Mo) is one of the high-temperature materials of immense potential. It has a body-centered cubic (bcc) structure so it is hard to fabricate using nonequilibrium processes such as the selective laser melting (SLM) without the formation of cracks due to its inherent brittleness. This study deals with the fabrication of dense and near crack-free cp-Mo samples produced by the SLM. The laser scan strategy is adjusted from a single scan to a double scan to reduce the solidification cracks. Samples produced with a laser double scan strategy show a density of similar to 99% with a hardness of similar to 222 HV.

Automated summary

This study focuses on fabricating dense and near crack-free commercial pure molybdenum samples using selective laser melting (SLM). The use of a double scan strategy helps reduce the formation of solidification cracks.