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.
|Title of host publication||Proceedings of the 10th European Stainless Steel Conference – Science and Market and 6th European Duplex Stainless Steel Conference & Exhibition (ESSC & DUPLEX 2019)|
|Publisher||Austrian Society for Metallurgy and Materials|
|Publication status||Published - 2019|
|Event||ESSC & DUPLEX 2019 - Vienna, Austria|
Duration: 30 Sep 2019 → 2 Oct 2019
|Conference||ESSC & DUPLEX 2019|
|Period||30/09/2019 → 02/10/2019|
- Additive manufacturing
- Austenitic stainless steel
- Low temperature surface hardening
- Microstructure stability
Funch, C. V., Mishin, O. V., Christiansen, T. L., & Somers, M. A. J. (2019). Influence of heat treatment and thermochemical surface engineering on the hierarchical microstructures of 3d printed austenitic stainless steel. In Proceedings of the 10th European Stainless Steel Conference – Science and Market and 6th European Duplex Stainless Steel Conference & Exhibition (ESSC & DUPLEX 2019) (pp. 22-31). Austrian Society for Metallurgy and Materials.