Influence of heat treatment and thermochemical surface engineering on the hierarchical microstructures of 3d printed austenitic stainless steel

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This research focuses on characterisation of the hierarchical microstructure of AMmanufactured austenitic stainless steel and the effect of post-processing. The austenitisation treatment is found to dissolve the cellular structure and to reduce hardness, particularly in the layer closest to the support structure. The effect of substrate on low temperature surface hardening (LSTH) is investigated. It is found that the prior annealing and homogenisation of the austenitised specimen change both the depth of expanded austenite formation and the hardness profile.
Original languageEnglish
Publication date2019
Publication statusPublished - 2019
EventESSC & DUPLEX 2019 - Vienna, Austria
Duration: 30 Sep 20192 Oct 2019


ConferenceESSC & DUPLEX 2019


  • Additive manufacturing
  • Austenitic stainless steel
  • Austenitisation
  • Low temperature surface hardening
  • Microstructure stability

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