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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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Brink, Bastian
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2017The ternary Fe-C-N system: Homogeneous distributions of nitrogen and carboncitations
- 2017The ternary Fe-C-N system: Homogeneous distributions of nitrogen and carboncitations
- 2017On the elusive crystal structure of expanded austenitecitations
- 2017Effect of carbon on interstitial ordering and magnetic properties of ε-Fe2(N,C)1-zcitations
- 2017Effect of carbon on interstitial ordering and magnetic properties of ε-Fe2(N,C) 1-zcitations
- 2016Composition-dependent variation of magnetic properties and interstitial ordering in homogeneous expanded austenitecitations
- 2016On the Carbon Solubility in Expanded Austenite and Formation of Hägg Carbide in AISI 316 Stainless Steelcitations
- 2016On the Carbon Solubility in Expanded Austenite and Formation of Hägg Carbide in AISI 316 Stainless Steelcitations
- 2014Thermal expansion and phase transformations of nitrogen-expanded austenite studied with in situ synchrotron X-ray diffractioncitations
- 2014Thermal expansion and phase transformations of nitrogen-expanded austenite studied with in situ synchrotron X-ray diffractioncitations
Places of action
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article
On the Carbon Solubility in Expanded Austenite and Formation of Hägg Carbide in AISI 316 Stainless Steel
Abstract
The carbon solubility in expanded austenite is investigated by controlled low temperaturegaseous <i>through</i>-carburizing of AISI 316 stainless steel thin foils with thermogravimetry and synchrotron powder diffraction analysis. Carburizing is carried out in C<sub>2</sub>H<sub>2</sub>–H<sub>2</sub>–N<sub>2</sub> and CO–H<sub>2</sub>–N<sub>2</sub> atmospheres at 380–420 °C and 465–470 °C, respectively. Hägg carbide (<sub>x</sub>-M<sub>5</sub>C<sub>2</sub>)develops when the carbon content in the expanded austenite exceeds the metastable solubility limit; the transformation of carbon expanded austenite into Hägg carbide occurs irrespective of carburizing temperature in the investigated temperature range (380–470 °C). The maximum solubility of carbon in expanded austenite (380 °C) is found to correspond to an occupancy (y<sub>C</sub>) of 0.220 of the interstitial octahedral sites of the austenite lattice (i.e., 4.74wt%C). Decomposition of Hägg carbide into M<sub>7</sub>C<sub>3 </sub>occurs upon prolonged carburizing treatment orthermal exposure in inert atmosphere (in situ synchrotron experiments).