Selective Laser Melting of AISI H10 (32CrMoV12-28) with substrate preheating for crack prevention

Activity: Talk or presentationOral presentation


In this study, the processability of the hot work tool steel AISI H10 was investigated using selective laser melting (SLM). The tool steel was fabricated at different process parameters using a substrate plate heating system to prevent cracking. The microstructure was investigated for defects such as cracks, pores, and lack of fusion. Microscopic investigations showed a fine cellular dendritic microstructure in the as-built condition. Due to the high cooling rates in the SLM process and the resulting residual stresses, cracks were found despite substrate preheating. For this reason, the preheating temperature was adapted. Process parameter optimization including the substrate preheating temperature led to crack-free tool steel samples.
Period19 Nov 2021
Event titleInternational Conference on Industry 4.0 and Smart Manufacturing
Event typeConference
LocationHagenberg, AustriaShow on map


  • selective laser melting
  • hot work tool steel
  • preheating
  • crack
  • porosity