| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Revuelta, Alejandro
VTT Technical Research Centre of Finland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2024Effects of surface finishes, heat treatments and printing orientations on stress corrosion cracking behavior of laser powder bed fusion 316L stainless steel in high-temperature watercitations
- 2024Process monitoring by deep neural networks in directed energy deposition : CNN-based detection, segmentation, and statistical analysis of melt poolscitations
- 2024Effect of laser focal point position on porosity and melt pool geometry in laser powder bed fusion additive manufacturingcitations
- 2024Process monitoring by deep neural networks in directed energy depositioncitations
- 2024Process monitoring by deep neural networks in directed energy deposition:CNN-based detection, segmentation, and statistical analysis of melt poolscitations
- 2023SCC behaviour of laser powder bed fused 316L stainless steel in high-temperature water at 288 °Ccitations
- 2022AM NPP - High temperature solution annealing of AM 316L
- 2021Additive manufacturing in nuclear power plants (AM-NPP)
- 2021Method for embedding components during additive manufacturing of metal parts
- 2020On the effect of shielding gas flow on porosity and melt pool geometry in laser powder bed fusion additive manufacturingcitations
- 2018Design and Verification of a Wireless Readout System for Integrated Motor Axle Condition Monitoringcitations
- 2017Soft magnetic alloys for selective laser melting
- 2017Feasibility of selective laser melting process in manufacturing of digital spare parts
- 2016Manufacturing of topology optimized soft magnetic core through 3D printing
- 2016Optimization and simulation of SLM process for high density H13 tool steel partscitations
- 2007High velocity forming of magnesium and titanium sheetscitations
- 2007Comparison of two commercial FE-codes for sheet metal forming
Places of action
| Organizations | Location | People |
|---|
report
AM NPP - High temperature solution annealing of AM 316L
Abstract
The effect of different solution annealing (SA) treatments on the material properties of L-PBF produced 316L specimens was investigated. Hot Isostatic Pressing (HIP) is often the heat treatment of choice for L-PBF 316L as it results in good mechanical properties and isotropic microstructure, whereas the standard solution annealing cycle at 1066°C is not sufficient at homogenizing the material structure and properties. High temperature annealing was considered as an alternative for the more expensive HIP process, and according to published research, the higher annealing temperatures produce properties more close to conventionally manufactured alloy. Cylindrical and rectangular bars were printed using L-PBF and the three different thermal post processes were applied: 1066°C/1h, 11150°C/1h and 1200°C/1h. All parts were heat treated in a vacuum furnace and stress relieved (650°C/2h) prior to solution annealing. The 1066°C annealing complies with the current 316L AM standard. After machining, characterization of mechanical properties was done by static tensile tests and Charpy-V impact tests. Samples were prepared for microstructure (SEM/EBSD) and chemical analysis. The printed test specimen had very low porosity and a chemical composition comparable to the feedstock powder with no excess oxidation. The microstructure evolved from partially recrystallized and anisotropic at 1066°C to nearly fully recrystallized at 1200°C. The tensile properties decreased with increasing annealing temperature and fulfilled the minimum requirements specified in AM standard (Re ≥ 205 MPa, Rm ≥ 515 MPa, A ≥ 30 %) in all conditions. The impact energies followed the same trend and for the 1200°C condition the average impact energy was below 40 J, which is the minimum requirement in standards SFS-EN 13480, SFS-EN 13445 that are relevant for materials used in nuclear applications.