| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Villa, Matteo
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (52/52 displayed)
- 2024Efficient ab initio stacking fault energy mapping for dilute interstitial alloyscitations
- 2023Reconciling experimental and theoretical stacking fault energies in face-centered cubic materials with the experimental twinning stresscitations
- 2023New White Etch Cracking resistant martensitic stainless steel for bearing applications by high temperature solution nitridingcitations
- 2023Process for obtaining a fine-grained martensitic structure component
- 2023Phase Stability and Deformation Modes in Functionally Graded Metastable Austenitic Stainless Steel; A Novel Approach to Evaluate the Role of Nitrogencitations
- 2023Aging 17-4 PH martensitic stainless steel prior to hardeningcitations
- 2023Ab initio study of the effect of interstitial alloying on the intrinsic stacking fault energy of paramagnetic γ-Fe and austenitic stainless steelcitations
- 2022Rapid Screening of the Mechanical Properties of 13 wt%Cr Steels with Uncharted Combinations of C and N Contentscitations
- 2021Targeted heat treatment of additively manufactured Ti-6Al-4V for controlled formation of Bi-lamellar microstructurescitations
- 2021Thermochemical surface hardening of Ti-6Al-4V: On the role of temperature and treatment mediacitations
- 2021Thermochemical surface hardening and self-repair of bulk metallic glass
- 2021Experimental validation of negative stacking fault energies in metastable face-centered cubic materialscitations
- 2020Synchrotron X-ray diffraction investigation of the effect of cryogenic treatment on the microstructure of Ti-6Al-4Vcitations
- 2020High Temperature Solution Nitriding of Stainless Steels; Current Status and Future Trendscitations
- 2020Strain, stress and stress relaxation in oxidized ZrCuAl-based bulk metallic glasscitations
- 2020On the Role of Isothermal Martensite Formation during Cryogenic Treatment of Steelscitations
- 2020Cryogenic treatment of an AISI D2 steel: The role of isothermal martensite formation and “martensite conditioning”citations
- 2019High Temperature Solution Nitriding of Stainless Steels; Current Status and Future Trends
- 2019New Developments in High Temperature Solution Nitriding of Stainless Steels
- 2019High and Low Temperature Surface Hardening of Martensitic Stainless Steels
- 2019Residual stress determination in oxidized bulk metallic glass using X-ray diffraction and FIB/DIC methods
- 2019On the Influence of Deep Cryogenic Treatment on Tempering Transformations in AISI D2 Steels
- 2019Surface hardening by gaseous oxidizing of (Zr55Cu30Al10Ni5)98Er2 bulk-metallic glasscitations
- 2018In-situ analysis of redistribution of carbon and nitrogen during tempering of low interstitial martensitic stainless steelcitations
- 2018Gaseous surface hardening of martensitic stainless steels
- 2018Martensite Formation from Reverted Austenite at Sub-zero Celsius Temperaturecitations
- 2018In Situ Investigation of the Evolution of Lattice Strain and Stresses in Austenite and Martensite During Quenching and Tempering of Steelcitations
- 2018Characterization of oxide layers developed on ZrCuAl-based bulk metallic glasses during gaseous thermochemical treatment
- 2018Surface hardening of Zr-Cu based bulk metallic glasses using gaseous thermochemical treatment
- 2018Activation energy of time-dependent martensite formation in steelcitations
- 2018High temperature gas nitriding of Cr containing martensitic steels
- 2017Thermally activated martensite formation in ferrous alloyscitations
- 2017Kinetics analysis of two-stage austenitization in supermartensitic stainless steelcitations
- 2017Complementary Methods for the Characterization of Corrosion Products on a Plant-Exposed Superheater Tubecitations
- 2017Cryogenic treatment of steel: from concept to metallurgical understanding
- 2017Martensite formation in Fe-C alloys at cryogenic temperaturescitations
- 2016Thermally activated formation of martensite in Fe-C alloys and Fe-17%Cr-C stainless steels during heating from boiling nitrogen temperature
- 2016Sub-Zero Celsius treatment: a promising option for future martensitic stainless steels
- 2016Martensitbildung in Fe-basierten Legierungen während der Erwärmung von Stickstoff-Siedetemperaturcitations
- 2016In Situ Techniques for the Investigation of the Kinetics of Austenitization of Supermartensitic Stainless Steelcitations
- 2015Anomalous kinetics of lath martensite formation in stainless steelcitations
- 2015The sub-zero Celsius treatment of precipitation hardenable semi-austenitic stainless steel
- 2015Thermally activated growth of lath martensite in Fe–Cr–Ni–Al stainless steelcitations
- 2015Investigation of Martensite Formation in Fe Based Alloys During Heating From Boiling Nitrogen Temperature
- 2014Kinetics of anomalous multi-step formation of lath martensite in steelcitations
- 2014Evolution of compressive strains in retained austenite during sub-zero Celsius martensite formation and temperingcitations
- 2014Isothermal Martensite Formation
- 2013In-situ investigation of martensite formation in AISI 52100 bearing steel at sub-zero Celsius temperature
- 2013Enhanced carbide precipitation during tempering of sub-zero Celsius treated AISI 52100 bearing steel
- 2013In situ investigation of the martensitic transformation in Fe–12 wt.%Ni–0.6 wt.%C steel at subzero temperaturescitations
- 2012Martensitic transformation and stress partitioning in a high-carbon steelcitations
- 2011Sub-zero austenite to martensite transformation in a Fe-Ni-0.6wt.%C alloy
Places of action
| Organizations | Location | People |
|---|
thesis
Isothermal Martensite Formation
Abstract
Isothermal (i.e. time dependent) martensite formation in steel was first observed in the 40ies of the XXth century and is still treated as an anomaly in the description of martensite formation which is considered as a-thermal (i.e. independent of time). Recently, the clarification of the mechanism leading to isothermal kinetics acquired new practical relevance because of the identification of isothermal martensite formation as the most likely process responsible for enhanced performances of sub-zero Celsius treated high carbon steel products.In the present work, different iron based alloys are chosen to investigate time dependent martensite formation. Among them, a Fe-11wt%Ni-0.6wt%C model alloy and Fe-1.6wt%Cr-1wt%C (AISI 52100), Fe-17wt%Cr-7wt%Ni (AISI 631) and Fe-16wt%Cr-5wt%Ni (AISI 630) commercial steels.<br/>The investigation was performed with in situ magnetometry, dilatometry, synchrotron XRay diffraction and ex situ electron backscatter diffraction. Magnetometry and dilatometry were applied to investigate the kinetics of the transformation. Synchrotron X-Ray diffraction was applied for the determination of lattice strains in austenite. Electron backscatter diffraction was applied to characterize the microstructure of the material and the morphology of martensite.The investigation of the kinetics yielded information on the mechanism responsible for time dependent martensite formation, which was indicated as thermally activated growth of athermally nucleated martensite. The investigation of lattice strains provided fundamental information on the state of stress in the material and clarified the role of the strain energy on martensite formation. Electron backscatter diffraction revealed that the microstructure of the material and the morphology of martensite were independent on the cooling conditions during sub-zero Celsius treatment.<br/>Irrespective of the morphology of martensite (lath or lenticular), it was observed that decelerations and accelerations of the transformation occur. This characteristic of the transformation was explained as a consequence of a partially athermal, partially thermally activated character of the transformation.<br/>