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  4. Using X-Rays and Neutrons for Materials Characterization

Using X-Rays and Neutrons for Materials Characterization

In page navigation: Research
  • Additive Manufacturing
    • Alloy development for additiv manufacturing
    • Cellular mechanical metamaterials
    • Development of process strategies
    • Expansion of the capability of SEBM by improved electron beam technology
    • Selectiv electron beam melting of special alloys
  • Modelling and Simulation
    • Simulation of additive manufacturing
    • Multi-Criteria Optimization
    • Foam simulation
  • Casting Technology
    • Investment casting and high temperature alloys
    • High pressure die casting and lightweight materials
      • Alloy development for high pressure die casting
      • In-situ reinforcement of Aluminium casting alloys
      • Diamond coating of molds and tools
      • Integral foam molding
      • Integration of piezoceramic modules
  • Ultra-hard Coatings
    • Process technology
      • Development and Up-Scaling of the hot filament process for diamond CVD
      • Alloying of metals and metal compounds in diamond CVD facilities
      • Electrochemical reactors with diamond electrodes for aqueous electrolytes
    • CVD diamond coatings of metals and ceramics
      • CVD diamond on Steel
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    • Test and characterisation of coated surfaces and components
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  • High Performance Alloys
    • Combinatorial alloy development by LMD
    • Development of high performance alloys
    • Using X-Rays and Neutrons for Materials Characterization
  • Equipment
  • Publications
  • Dissertations

Using X-Rays and Neutrons for Materials Characterization

Target-oriented materials development is based on a profound understanding of the process-inherent mechanisms. This project aims on in-situ observation of the material consolidation process during additive manufacturing. This includes particular phase transformations and the nucleation and growth of precipitates. The observation of these phenomena is a big challenge due to their high temporal dynamics. New experimental environments allow the observation of the formation of the microstructure of a material under process conditions. The competence anchor DESY-FAU DHW, a cooperation between FAU and the Helmholtz centers DESY and DHW, provides access to this accelerator based experimental environment allows.

Contact:

Dr.-Ing. Christopher Zenk

Interior view of the PETRA III experimental hall.
(Enlarge)
FokuView along the storage ring PETRA III with bending magnets (blue), focussing magnets (red) and undulators (yellow) in the range of the photon experimental hall.
(Enlarge)
Scheme of the experimental setup for thermal alternating tests
(Enlarge)
Changes in the scatter pattern of CMSX-4 after repeated heating and quenching
(Enlarge)
Development of diffraction angles and lattice parameters during the selectiv laser melting process
(Enlarge)
Development of the particle size distribution during isothermal aging at 500 °C calculated from small angle scattering data
(Enlarge)
Interior view of the PETRA III experimental hall.
FokuView along the storage ring PETRA III with bending magnets (blue), focussing magnets (red) and undulators (yellow) in the range of the photon experimental hall.
Scheme of the experimental setup for thermal alternating tests
Changes in the scatter pattern of CMSX-4 after repeated heating and quenching
Development of diffraction angles and lattice parameters during the selectiv laser melting process
Development of the particle size distribution during isothermal aging at 500 °C calculated from small angle scattering data

Publications:

  • Krohmer E., Schmeiser F., Wahlmann B., Rosigkeit J., Graf G., Spoerk-Erdely P., Clemens H., Staron P., Körner C., Reimers W., Uhlmann E.:
    Revealing dynamic processes in laser powder bed fusion with in situ X-ray diffraction at PETRA III
    In: Review of Scientific Instruments 93 (2022)
    ISSN: 0034-6748
    DOI: 10.1063/5.0077105
  • Ioannidou C., König HH., Semjatov N., Ackelid U., Staron P., Körner C., Hedström P., Lindwall G.:
    In-situ synchrotron X-ray analysis of metal Additive Manufacturing: Current state, opportunities and challenges
    In: Materials and Design 219 (2022), Article No.: 110790
    ISSN: 0261-3069
    DOI: 10.1016/j.matdes.2022.110790
  • Wahlmann B., Krohmer E., Breuning C., Schell N., Staron P., Uhlmann E., Körner C.:
    In‐situ Observation of γ' Phase Transformation Dynamics during Selective Laser Melting of CMSX‐4
    In: Advanced Engineering Materials (2021)
    ISSN: 1438-1656
    DOI: 10.1002/adem.202100112
  • Wahlmann B., Galgon F., Stark A., Gayer S., Schell N., Staron P., Körner C.:
    Growth and coarsening kinetics of gamma prime precipitates in CMSX-4 under simulated additive manufacturing conditions
    In: Acta Materialia (2019)
    ISSN: 1359-6454
    DOI: 10.1016/j.actamat.2019.08.049



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