Laser Powder Bed Fusion (LPBF) printing is used for manufacturing conformal cooling injection molds with internal channels. Currently, the steel to manufacture such by LPBF maraging 18Ni300. However, this softer at high temperatures and less resistant corrosion than reference steel, AISI H11. Moreover, 18Ni300 contains cobalt, an element that can be harmful health of people handling powders mad...

In laser powder bed fusion, process-inherited thermal residual stress is developed due to the strain misfit between each layer. Detailed analysis and a prediction of are needed because it can induce distortions components and, in some serious cases, stress-induced defects such as cracking. this work, effects heat treatment conditions on maraging 18Ni-300 steel, fabricated by were investigated. ...

In the present work, the influence of aging temperature on mechanical properties and sound velocity of Maraging steel M350 was investigated. For this purpose, first, samples were solution annealed at 825◦C for 2 hours and then age hardened at 510◦C-600◦C for 3 hours. Hardness, tensile and impact tests were used for determining mechanical properties and longitudinal ultrasonic velocity was used ...