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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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Lopes, João G.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2024Evolution of microstructure and deformation mechanisms in a metastable Fe42Mn28Co10Cr15Si5 high entropy alloycitations
- 2024Unveiling the microstructure evolution and mechanical properties in a gas tungsten arc-welded Fe–Mn–Si–Cr–Ni shape memory alloycitations
- 2024In-situ microstructural evolution during tensile loading of CoCrFeMnNi high entropy alloy welded joint probed by high energy synchrotron X-ray diffraction
- 2024Revealing microstructural evolution and mechanical properties of resistance spot welded NiTi-stainless steel with Ni or Nb interlayercitations
- 2024Wire arc additive manufacturing of a high-strength low-alloy steel part: environmental impacts, costs, and mechanical propertiescitations
- 2024Wire arc additive manufacturing of a high-strength low-alloy steel part ; environmental impacts, costs, and mechanical propertiescitations
- 2024Microstructure gradients across the white etching and transition layers of a heavy haul pearlitic steelcitations
- 2023Microstructure evolution and mechanical properties in a gas tungsten arc welded Fe42Mn28Co10Cr15Si5 metastable high entropy alloycitations
- 2023Deformation behavior and strengthening effects of an eutectic AlCoCrFeNi2.1 high entropy alloy probed by in-situ synchrotron X-ray diffraction and post-mortem EBSDcitations
- 2023Evolution of microstructure and mechanical properties in gas tungsten arc welded dual-phase Fe50Mn30Co10Cr10 high entropy alloycitations
- 2022Gas tungsten arc welding of as-cast AlCoCrFeNi2.1 eutectic high entropy alloycitations
- 2022Improving the ductility in laser welded joints of CoCrFeMnNi high entropy alloy to 316 stainless steelcitations
- 2022Improving the ductility in laser welded joints of CoCrFeMnNi high entropy alloy to 316 stainless steelcitations
- 2022The influence of in-situ alloying of electro-spark deposited coatings on the multiscale morphological and mechanical properties of laser welded Al–Si coated 22MnB5citations
- 2020Effect of milling parameters on HSLA steel parts produced by Wire and Arc Additive Manufacturing (WAAM)citations
- 2020Gas tungsten arc welding of as-rolled CrMnFeCoNi high entropy alloycitations
Places of action
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article
Microstructure gradients across the white etching and transition layers of a heavy haul pearlitic steel
Abstract
This study delves into the frequent surface cracking observed in severely damaged pearlitic carbon steel rails, aphenomenon often attributed to the challenging characteristics of the white etching layer (WEL) formed duringrailway operations. To explore this issue, a severely damaged rail cross-section featuring a substantial WEL layermeasuring 600 μm in depth was analyzed. The WEL's size was initially determined through optical microscopyand characterized via nano-hardness testing, which revealed an impressive hardness of up to 12 GPa. Highenergysynchrotron X-ray diffraction (HESXRD) analysis was employed to uncover the crystalline structure diversitygradient that resulted from railway use. The results unveiled that cumulative high-temperature surfacedamage leads to the formation of both the WEL and a transitional layer. Within this transitional layer, a gradualreduction in retained austenite is observed, coupled with an increase in the presence of cementite and ferrite asone approaches the base metal. Remarkably, very shallow depths from the surface display tempered martensitecharacteristics, characterized by high nanohardness, lower dislocation density, and an initially smaller, thenincreasing austenite fraction. The use of site-resolved synchrotron radiation diffraction at different depths fromthe surface to the interior of the damaged rail cross-section allowed a unique insight into the phase transformations,microstrain developments, and compositional evolution.