In Situ Observation of γ′ Phase Transformation Dynamics During Selective Laser Melting of CMSX-4
| العنوان: | In Situ Observation of γ′ Phase Transformation Dynamics During Selective Laser Melting of CMSX-4 |
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| المؤلفون: | Erwin Krohmer, Peter Staron, Benjamin Wahlmann, Eckart Uhlmann, Christoph Breuning, Norbert Schell, Carolin Körner |
| المصدر: | 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. Vol. 23 (2021) 11, 2100112. (DOI: /10.1002/adem.202100112) Advanced engineering materials 23(11), 2100112 (2021). doi:10.1002/adem.202100112 special issue: "Neutrons and Synchrotron Radiation-Unique Tools for the Characterization of Materials" |
| بيانات النشر: | Wiley, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | In situ, Materials science, Chemical physics, Phase (matter), Dynamics (mechanics), ddc:660, General Materials Science, Selective laser melting, Condensed Matter Physics, Transformation (music) |
| الوصف: | Advanced engineering materials 23(11), 2100112 (2021). doi:10.1002/adem.202100112 special issue: "Neutrons and Synchrotron Radiation - Unique Tools for the Characterization of Materials" Additive manufacturing (AM) of superalloys has been attracting increasinginterest. While most studies focus on the processability and mechanical propertiesof the finished product, it is also necessary to understand the phasetransformations during the consecutive melting processes. Herein, the precipitationand dissolution of the ��0 phase in the Ni-base superalloy CMSX-4 in aselective laser melting process is reported. These phase transformations arestudied in situ by small-angle X-ray scattering (SAXS) during AM. Concurrentwide-angle X-ray scattering (WAXS) provides information on the evolution oflattice parameters and temperature during the process. Additional thermal andthermodynamic simulations are carried out to support the experiments. Theinvestigations are focused on the influence of different beam scanning strategiesas well as the effect of laser power and scanning speed on the phase transformationdynamics. Due to the high cooling and heating rates inherent to AM,phase transformations occur far off equilibrium. Both precipitation and dissolutionof ��0 phase are observed. The scan strategies are shown to have a considerableeffect on the phase transformation dynamics, which exceed the impactof the beam parameters. The capability of combined SAXS and WAXS for thein situ study of phase transformations in AM processes is demonstrated. Published by Deutsche Gesellschaft fu��r Materialkunde, Frankfurt, M. |
| اللغة: | English |
| تدمد: | 1438-1656 |
| DOI: | 10.1002/adem.202100112) |
| DOI: | 10.1002/adem.202100112 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::894012ef7b33c1bab6e29868bf1d40e6 https://publications.hzg.de/id/40125 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....894012ef7b33c1bab6e29868bf1d40e6 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14381656 |
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| DOI: | 10.1002/adem.202100112) |