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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Grumsen, Flemming Bjerg
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (33/33 displayed)
- 20243D microstructural and strain evolution during the early stages of tensile deformationcitations
- 2023Thermal stability of hierarchical microstructural features in additively manufactured stainless steelcitations
- 2023Aging 17-4 PH martensitic stainless steel prior to hardeningcitations
- 2023The effect of trace level copper content on intergranular corrosion of extruded AA6082-T6 alloyscitations
- 2021Thermochemical surface hardening and self-repair of bulk metallic glass
- 2021Residual strain-stress in manganese steel railway-crossing determined by synchrotron and laboratory X-raycitations
- 2021Thermal evolution of ferrite in electrodeposited iron‑carbon coatings in relation to phase transformations during post-deposition annealingcitations
- 2020Anisotropy effects on gaseous nitriding of austenitic stainless steel single crystalscitations
- 2020Strain, stress and stress relaxation in oxidized ZrCuAl-based bulk metallic glasscitations
- 2020Strain, stress and stress relaxation in oxidized ZrCuAl-based bulk metallic glasscitations
- 2019Nitridation of grate in a biomass-fired boiler
- 2019Residual stress determination in oxidized bulk metallic glass using X-ray diffraction and FIB/DIC methods
- 2019Analyzing Boron in 9–12% Chromium Steels Using Atom Probe Tomographycitations
- 2019Surface hardening by gaseous oxidizing of (Zr55Cu30Al10Ni5)98Er2 bulk-metallic glasscitations
- 2019Effect of service exposure on KCl corrosion attack of AISI 347H FG steelcitations
- 2019Effect of service exposure on KCl corrosion attack of AISI 347H FG steelcitations
- 2018Characterization of pack cemented Ni 2 Al 3 coating exposed to KCl(s) induced corrosion at 600 °Ccitations
- 2018Characterization of oxide layers developed on ZrCuAl-based bulk metallic glasses during gaseous thermochemical treatment
- 2018Characterization of pack cemented Ni2Al3 coating exposed to KCl(s) induced corrosion at 600 °Ccitations
- 2018Fine (Cr,Fe)2B borides on grain boundaries in a 10Cr–0.01B martensitic steelcitations
- 2018Formation and stabilization of reverted austenite in supermartensitic stainless steelcitations
- 2017Formation and stabilization of reversed austenite in supermartensitic stainless steel
- 2017Discontinuous precipitation in a nickel-free high nitrogen austenitic stainless steel on solution nitridingcitations
- 2015Effect of iodine on the corrosion of Au-Al wire bondscitations
- 2014A TEM Study on the Ti-Alloyed Grey Iron
- 2014New amorphous interface for precipitate nitrides in steelcitations
- 2013Investigation on Long-term Creep Rupture Properties and Microstructure Stability of Fe-Ni based Alloy Ni-23Cr-7W at 700°Ccitations
- 2012Martensitic transformation and stress partitioning in a high-carbon steelcitations
- 2011Electrochemical migration of tin in electronics and microstructure of the dendritescitations
- 2010Microstructural investigation of the oxide formed on TP 347H FG during long-term steam oxidationcitations
- 2010Microstructure Evolution During Steam Oxidation of a Nb Stabilized Austenitic Stainless Steelcitations
- 2008Ge nanoclusters in PECVD-deposited glass caused only by heat treatmentcitations
- 2007Ge nanoclusters in PECVD-deposited glass after heat treating and electron irradiationcitations
Places of action
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article
Thermal stability of hierarchical microstructural features in additively manufactured stainless steel
Abstract
Additive manufacturing of austenitic stainless steel results in an unconventional hierarchical microstructure. This hierarchical microstructure was investigated in detail in the as-built condition. The hierarchical microstructure consists of elongated austenite grains and melt pool fusion boundaries with a spherical cap morphology at the largest length scale. At a smaller length scale elongated columnar cell structures exist with elemental segregation at the cell walls. The cells were found not to be a misorientation structure in themselves as often noted, but rather groups of cells with a specific orientation, which are collected in 3-5 μm domains. At even smaller length scales, amorphous spherical silicates are found along with a high dislocation density along cell walls. The thermal stability of the unconventional features as melt pool boundaries, elongated austenite grains, cell domains, cell structure, amorphous precipitates was investigated systematically in the temperature range 400-1100 °C. The dislocation network forming the cell boundaries dissolves gradually and remains thermally stable up to about 800 °C. The melt pool boundaries are more thermally stable and dissolve above 900 °C. The elongated austenite grains and crystallographic texture are fully stable within the investigated temperature range. The cell domains appear to be pinned by precipitation as the cellular structure is dissolved and gradually straighten and resemble regular low angle grain boundaries. The amorphous silicates act as heterogeneous nucleation sites for the formation of σ-phase in the temperature range 700-800 °C, while at higher treatment temperatures these silicates are replaced by large, oblong Si-Mn oxides and small, round Mn-Cr oxides.