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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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Völker, B.
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Topics
Publications (6/6 displayed)
- 2020Mechanical and optical degradation of flexible optical solar reflectors during simulated low earth orbit thermal cyclingcitations
- 2019Influence of annealing on microstructure and mechanical properties of ultrafine-grained Ti45Nbcitations
- 2018Thermodynamic instability of a nanocrystalline, single-phase TiZrNbHfTa alloy and its impact on the mechanical propertiescitations
- 2017Crack path identification in a nanostructured pearlitic steel using atom probe tomographycitations
- 2017Influence of testing orientation on mechanical properties of Ti45Nb deformed by high pressure torsioncitations
- 2005Spatial light modulators with monocrystalline silicon micromirrors made by wafer bondingcitations
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article
Crack path identification in a nanostructured pearlitic steel using atom probe tomography
Abstract
<p>Severely plastically deformed pearlitic steels often possess poor crack-growth resistance along the deformation-induced elongated nanolamellar microstructure. However, it is unknown if the crack propagates in the nanocrystalline ferrite or along the ferrite-cementite interface. Here, a pearlitic steel subjected to high pressure torsion exhibiting a fracture toughness of only ~ 4 MPa·m<sup>1/2</sup> along the elongated structure was selected to address this fundamental question. For the first time 3-dimensional atom probe tomography was employed to unravel the local atomistic fractography. We present clear evidence that the low fracture toughness is controlled by crack propagation along the interface between the nanocrystalline carbon-rich and ferritic phase.</p>