| People | Locations | Statistics |
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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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Solhjoo, Soheil
University of Groningen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2021State of the art methods to post-process mechanical test data to characterize the hot deformation behavior of metalscitations
- 2020Effects of loading conditions on free surface roughening of AISI 420 martensitic stainless steelcitations
- 2017Two phenomenological models to predict the single peak flow stress curves up to the peak during hot deformationcitations
- 2014Determination of flow stress and the critical strain for the onset of dynamic recrystallization using a sine function
- 2014Two new mathematical models to predict the flow stress at hot deformation
- 2014Evaluation of coefficient of friction in bulk metal formingcitations
- 2013Characterization of nitrocarburized surface layer on AISI 1020 steel by electrolytic plasma processing in an urea electrolytecitations
Places of action
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article
Effects of loading conditions on free surface roughening of AISI 420 martensitic stainless steel
Abstract
ree surface roughening affects the tribological behavior of contacting bodies in multistage metal forming processes. This phenomenon was investigated on sheets of AISI 420 martensitic stainless steel by applying uniaxial and radial straining modes via tensile and Erichsen cupping tests, respectively. By means of focus variation microscopy, the free surface roughness evolution was studied for each sample at different values of strain. Moreover, the microscopic deformation of grains was visualized using scanning electron microscopy and differential interference contrast microscopy. The results show that the free surface roughening rate in the uniaxial strain mode is higher than that in the radial one. Furthermore, the surface height distribution of the deformed surfaces was found to be dependent on the deforming strain and tended toward a Gaussian one at higher strains. Grain boundaries and chromium carbide particles were found to be responsible for the peaks formed in the roughened free surfaces. Analyses of the deformed free surfaces showed distortion of the grain morphology, which is the mechanism responsible for free surface roughening.