- document
-
Krugla, M. (author), Offerman, S.E. (author), Sietsma, J. (author), Hanlon, Dave N. (author)The production reality of sheet steels from casting to the end product is such that in the cases of ultra- and advanced high-strength steels, we have to deal with the segregation of elements on macro- and microlevels. Both can have a significant impact on the microstructure formation and resulting properties. There are several production stages...journal article 2024
- document
-
Georgakopoulos, E. (author), Hosseini, A. (author), Kerry, T.J. (author), Hage, Johannes (author), Meijer, Koen (author), Offerman, S.E. (author), Yang, Y. (author)HIsarna is a novel ironmaking process with great raw materials versatility that is attractive for various secondary resources. Among the materials that can be recycled, there is steel scrap which is fed to the furnace bath through an inclined chute. The velocity distribution of the scrap particles along the chute affects the particles’...journal article 2022
- document
-
Hosseini, A. (author), Georgakopoulos, E. (author), Dihman, Vinod (author), Hage, Johannes (author), Meijer, Koen (author), Zeilstra, Christiaan (author), Offerman, S.E. (author), Yang, Y. (author)Galvanized steel scrap flow and injection into the HIsarna reactor are investigated using discrete element method (DEM). The scrap particle is fed into the reactor through an inclined chute and hits the slag surface where the zinc content is evaporated and solid particles melt. A DEM model is setup and validated using experimental data...journal article 2022
- document
-
Ioannidou, C. (author), Navarro Lopez, A. (author), Dalgliesh, Robert M. (author), Rijkenberg, Arjan (author), Geerlofs, N. (author), Pappas, C. (author), Sietsma, J. (author), van Well, A.A. (author), Offerman, S.E. (author)In-situ Neutron Diffraction and Small-Angle Neutron Scattering (SANS) are employed for the first time simultaneously in order to reveal the interaction between the austenite to ferrite phase transformation and the precipitation kinetics during isothermal annealing at 650 and at 700 °C in three steels with different vanadium (V) and carbon (C)...journal article 2021
- document
-
Microstructure, precipitate and property evolution in cold-rolled Ti-V high strength low alloy steelZhang, Xukai (author), Ioannidou, C. (author), ten Brink, Gert H. (author), Navarro Lopez, A. (author), Wormann, Jan (author), Campaniello, Jean (author), Dalgliesh, Robert M. (author), van Well, A.A. (author), Offerman, S.E. (author), Kranendonk, Winfried (author), Kooi, Bart J. (author)A cold-rolled Ti-V high strength low alloy (HSLA) steel was isothermally annealed at 650 °C and 700 °C for different times. A unique combination of techniques including visible light microscopy (VLM), transmission electron microscopy (TEM), matrix dissolution, small angle neutron scattering (SANS) and hardness measurement has been employed to...journal article 2020
- document
-
Ioannidou, C. (author), Navarro Lopez, A. (author), Rijkenberg, Arjan (author), Dalgliesh, Robert M. (author), Koelling, Sebastian (author), Pappas, C. (author), Sietsma, J. (author), van Well, A.A. (author), Offerman, S.E. (author)In-situ Small-Angle Neutron Scattering (SANS) is used to determine the time evolution of the chemical composition of precipitates at 650 °C and 700 °C in three micro-alloyed steels with different vanadium (V) and carbon (C) concentrations. Precipitates with a distribution of substoichiometric carbon-to-metal ratios are measured in all steels....journal article 2020
- document
-
Ioannidou, C. (author), Arechabaleta Guenechea, Z. (author), Navarro Lopez, A. (author), Rijkenberg, Arjan (author), Dalgliesh, Robert M. (author), Kölling, S. (author), Bliznuk, Vitaliy (author), Pappas, C. (author), Sietsma, J. (author), van Well, A.A. (author), Offerman, S.E. (author)The precipitation kinetics of vanadium carbides and its interaction with the austenite-to-ferrite phase transformation is studied in two micro-alloyed steels that differ in vanadium and carbon concentrations by a factor of two, but have the same vanadium-to-carbon atomic ratio of 1:1. Dilatometry is used for heat-treating the specimens and...journal article 2019
- document
-
Ioannidou, C. (author), Arechabaleta Guenechea, Z. (author), Rijkenberg, Arjan (author), Dalgliesh, Robert M. (author), van Well, A.A. (author), Offerman, S.E. (author)Nanosteels are used in automotive applications to accomplish resource-efficiency while providing high-tech properties. Quantitative data and further understanding on the precipitation kinetics in Nanosteels can contribute to fulfil this goal. Small-Angle Neutron Scattering measurements are performed on a Fe-C-Mn-V steel, previously heat-treated...journal article 2018
- document
-
Kostenko, A. (author), Sharma, H. (author), Gözde Dere, E. (author), King, A. (author), Ludwig, W. (author), Van Oel, W. (author), Offerman, S.E. (author), Stallinga, S. (author), Van Vliet, L.J. (author)This work presents the development of a non-destructive imaging technique for the investigation of the microstructure of cementite grains embedded in a ferrite matrix of medium-carbon steel. The measurements were carried out at the material science beamline of the European Synchrotron Radiation Facility (ESRF) ID11. It was shown that in-line X...conference paper 2011
- document
- Offerman, S.E. (author) doctoral thesis 2003