0000000000115341

AUTHOR

Tim Gräning

showing 3 related works from this author

Investigation of precipitate in an austenitic ODS steel containing a carbon-rich process control agent

2018

This work has been carried out within the framework of the German Helmholtz Association and has received funding from the topic “Materials Research for the Future Energy Supply”. The work of M. Parish and Rainer Ziegler is gratefully acknowledged. Thanks are also due to the team of the chemical laboratory at the KIT for performing the chemical analysis. The help of the beamline staff at ELETTRA (project 20140052 ) synchrotron radiation facility is acknowledged. We acknowledge support by Deutsche Forschungsgemeinschaft and Open Access Publishing Fund of Karlsruhe Institute of Technology.

Nuclear and High Energy PhysicsMaterials scienceYield (engineering)Materials Science (miscellaneous)Oxidechemistry.chemical_elementProcess control agent02 engineering and technology01 natural sciences010305 fluids & plasmasCarbidechemistry.chemical_compound0103 physical sciences:NATURAL SCIENCES:Physics [Research Subject Categories]Process controlAusteniteMetallurgytechnology industry and agricultureX-ray absorption spectroscopy021001 nanoscience & nanotechnologylcsh:TK9001-9401Oxide dispersion strengthened steelNuclear Energy and Engineeringchemistry8. Economic growthlcsh:Nuclear engineering. Atomic powerAustenitic steelMechanical alloying0210 nano-technologyDispersion (chemistry)CarbonTransmission electron microscopyTitaniumNuclear Materials and Energy
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Temperature-dependent EXAFS study of the local structure and lattice dynamics in cubic Y2O3

2016

The local structure and lattice dynamics in cubic Y2O3were studied at the YK-edge by X-ray absorption spectroscopy in the temperature range from 300 to 1273 K. The temperature dependence of the extended X-ray absorption fine structure was successfully interpreted using classical molecular dynamics and a novel reverse Monte Carlo method, coupled with the evolutionary algorithm. The obtained results allowed the temperature dependence of the yttria atomic structure to be followed up to ∼6 Å and to validate two force-field models.

Lattice dynamicsNuclear and High Energy PhysicsRadiationMaterials scienceAbsorption spectroscopyExtended X-ray absorption fine structure02 engineering and technologyReverse Monte CarloAtmospheric temperature range021001 nanoscience & nanotechnology01 natural sciencesMolecular physicsMolecular dynamics0103 physical sciences010306 general physics0210 nano-technologyAbsorption (electromagnetic radiation)InstrumentationYttria-stabilized zirconiaJournal of Synchrotron Radiation
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ODS steel raw material local structure analysis using X-ray absorption spectroscopy

2015

Oxide dispersion strengthened (ODS) steels are promising materials for fusion power reactors, concentrated solar power plants, jet engines, chemical reactors as well as for hydrogen production from thermolysis of water. In this study we used X-ray absorption spectroscopy at the Fe and Cr K-edges as a tool to get insight into the local structure of ferritic and austenitic ODS steels around Fe and Cr atoms and its transformation during mechanical alloying process. Using the analysis of X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) we found that for austenitic samples a transformation of ferritic steel to austenitic steel is detectable after …

AusteniteX-ray absorption spectroscopyChromiumchemistry.chemical_compoundMaterials scienceAbsorption spectroscopyExtended X-ray absorption fine structurechemistryMetallurgyOxidechemistry.chemical_elementAbsorption (electromagnetic radiation)XANESIOP Conference Series: Materials Science and Engineering
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