Precipitation in 300 grade maraging steel built by selective laser melting: Aging at 510 °C for 2 h

This paper focuses on the precipitates found in the 300 grade maraging steel built by Selective Laser Melting (SLM), which is globally one of the fastest-growing Additive Manufacturing (AM) technology. The test samples were built layer by layer via full melting and rapid solidification of the deposited powder bed of 300 grade maraging steel, using an M2 Concept Laser machine. The samples were aged at 510 °C for 2 h, and then air-cooled. Optical...