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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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Ecker, Werner
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2024Numerical and experimental assessment of liquid metal embrittlement in externally loaded spot welds
- 2023Interstitial Segregation has the Potential to Mitigate Liquid Metal Embrittlement in Ironcitations
- 2023Mechanical load induced hydrogen charging of retained austenite in quenching and partitioning (Q&P) steelcitations
- 2022Hydrogen trapping at retained austenite evaluated in Quenching & Partitioning (Q&P) steel : part I: experimental results
- 2022The interaction of hydrogen with retained austenite in quenching and partitioning (Q&P) and transformation induced plasticity (TRIP) steel
- 2022Hydrogen trapping at retained austenite evaluated in Quenched & Partitioning (Q&P) steel : part II : simulation results
- 2022The role of retained austenite in the hydrogen embrittlement of quenching and partitioning (Q&P) steels
- 2021Grain boundary segregation in Ni-base alloys: A combined atom probe tomography and first principles studycitations
- 2021The effect of hydrogen on the strain induced phase transformation of austenite in automotive quenching and partitioning steel
- 2021Validated multi-physical finite element modelling of the spot welding process of the advanced high strength steel dp1200hdcitations
- 2021Correlative cross-sectional characterization of nitrided, carburized and shot-peened steelscitations
- 2021Liquid Metal Embrittlement of Advanced High Strength Steelcitations
- 2021An atomistic view on Oxygen, antisites and vacancies in the γ-TiAl phasecitations
- 2020Cycled hydrogen permeation through Armco iron – A joint experimental and modeling approachcitations
- 2020Stress relaxation through thermal crack formation in CVD TiCN coatings grown on WC-Co with different Co contentscitations
- 2020Nanoscale stress distributions and microstructural changes at scratch track cross-sections of a deformed brittle-ductile CrN-Cr bilayercitations
- 2020Model-Based Residual Stress Design in Multiphase Seamless Steel Tubescitations
- 2019Residual stress and microstructure evolution in steel tubes for different cooling conditions – Simulation and verificationcitations
- 2019Thermodynamic and mechanical stability of Ni3X-type intermetallic compoundscitations
- 2016In-situ Observation of Cross-Sectional Microstructural Changes and Stress Distributions in Fracturing TiN Thin Film during Nanoindentationcitations
- 2015Size Effects in Residual Stress Formation during Quenching of Cylinders Made of Hot-Work Tool Steelcitations
Places of action
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article
Correlative cross-sectional characterization of nitrided, carburized and shot-peened steels
Abstract
Mechanical properties of case modified steels depend decisively on the near-surface gradients of residual stresses, microstructures, phases and chemical composition, which are generated by the empirically well-established case-hardening techniques. Currently, however, to obtain the correlation between near-surface structure–property gradients, applied hardening process parameters and steels’ overall performance is a very challenging task. In this work, high-energy synchrotron cross-sectional X-ray diffraction (CSmicroXRD) using a pencil beam cross-section of 20 × 500 μm2 and complementary analytical techniques are used to characterize the surface-to-bulk gradient of (i) a plasma nitrided steel W300, (ii) a carburized case hardening steel (grade 18CrNiMo7-6) and (iii) a shot-peened high strength steel, type 300M. CSmicroXRD analysis reveals complex gradients of martensite and austenite phases, residual stresses in both phases, crystallographic texture and the evolution of diffraction peak broadening with a spatial resolution of ~20 μm. These parameters are correlated with the gradients of hardness, morphology-microstructure and with the changes in N and C concentrations and/or retained austenite formation/depletion in all three model samples. Finally, the correlative micro-analytics approach indicates the complexity of near surface structure-property relationships as well as the importance of innovative cross-sectional characterization, which allows for assessing gradual near-surface physical and/or chemical changes accompanying thermo-chemical and mechanical surface treatments.