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  4. Expansion of the capability of SEBM by improved electron beam technology

Expansion of the capability of SEBM by improved electron beam technology

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
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Expansion of the capability of SEBM by improved electron beam technology

Commercial available EBSM machines show strong limitations with respect to the beam power, beam quality and beam control. To overcome these limitations, the electron gun and control system of an Arcam S12 System was renewed. The resulting machine is equipped with a 6 kW electron beam gun and a backscattering electron detector for process monitoring. This is the first electron beam AM machine where the electron beam serves for both, processing and analyzing.

Contact:

Prof. Dr.-Ing. habil. Carolin Körner

In-house developed SEBM plant ATHENE
(Enlarge)
Electron-optical imaging (ELO) is integrated as an additional process step
(Enlarge)
Layer-wise 3D reconstruction of a component from process observation data (enlarge to animate)
(Enlarge)
Comparison between 3D reconstruction from process observation data and final component
(Enlarge)
Comparison between ELO and X-ray CT of the final component
(Enlarge)
In-house developed SEBM plant ATHENE
Electron-optical imaging (ELO) is integrated as an additional process step
Layer-wise 3D reconstruction of a component from process observation data (enlarge to animate)
Comparison between 3D reconstruction from process observation data and final component
Comparison between ELO and X-ray CT of the final component

Publications:

  • Renner J., Breuning C., Markl M., Körner C.:
    Surface topographies from electron optical images in electron beam powder bed fusion for process monitoring and control
    In: Additive Manufacturing 60 (2022), Article No.: 103172
    ISSN: 2214-7810
    DOI: 10.1016/j.addma.2022.103172
  • Arnold C., Körner C.:
    Electron-optical in-situ metrology for electron beam powder bed fusion: calibration and validation
    In: Measurement Science & Technology 33 (2022), Article No.: 014001
    ISSN: 0957-0233
    DOI: 10.1088/1361-6501/ac2d5c
  • Bäreis J., Semjatov N., Renner J., Ye J., Fu Z., Körner C.:
    Electron-optical in-situ crack monitoring during electron beam powder bed fusion of the Ni-Base superalloy CMSX-4
    In: Progress in Additive Manufacturing (2022)
    ISSN: 2363-9512
    DOI: 10.1007/s40964-022-00357-9
  • Arnold C.:
    Grundlagenuntersuchung zur elektronen-optischen Prozessbeobachtung beim Pulverbettschmelzen mit dem Elektronenstrahl (Dissertation, 2022)
  • Arnold C., Breuning C., Körner C.:
    Electron-Optical In Situ Imaging for the Assessment of Accuracy in Electron Beam Powder Bed Fusion
    In: Materials 14 (2021), Article No.: 7240
    ISSN: 1996-1944
    DOI: 10.3390/ma14237240
  • Arnold C., Körner C.:
    In-situ electron optical measurement of thermal expansion in electron beam powder bed fusion
    In: Additive Manufacturing 46 (2021)
    ISSN: 2214-7810
    DOI: 10.1016/j.addma.2021.102213
  • Breuning C., Arnold C., Markl M., Körner C.:
    A multivariate meltpool stability criterion for fabrication of complex geometries in electron beam powder bed fusion
    In: Additive Manufacturing 45 (2021), Article No.: 102051
    ISSN: 2214-7810
    DOI: 10.1016/j.addma.2021.102051
  • Arnold C., Böhm J., Körner C.:
    In Operando Monitoring by Analysis of Backscattered Electrons during Electron Beam Melting
    In: Advanced Engineering Materials 22 (2019), Article No.: 1901102
    ISSN: 1438-1656
    DOI: 10.1002/adem.201901102
  • Pobel C., Arnold C., Osmanlic F., Fu Z., Körner C.:
    Immediate development of processing windows for selective electron beam melting using layerwise monitoring via backscattered electron detection
    In: Materials Letters 249 (2019), p. 70 - 72
    ISSN: 0167-577X
    DOI: 10.1016/j.matlet.2019.03.048
  • Arnold C., Pobel C., Osmanlic F., Körner C.:
    Layerwise monitoring of electron beam melting via backscatter electron detection
    In: Rapid Prototyping Journal 24 (2018), p. 1401 - 1406
    ISSN: 1355-2546
    DOI: 10.1108/RPJ-02-2018-0034



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