Niersbach, Till und Kolbe, Matthias und Becker, Maike und Kargl, Florian (2022) Twinned dendrites in CrB-structured intermetallic NiGd. IOP Conference Series : Materials Science and Engineering. Institute of Physics (IOP) Publishing. doi: 10.1088/1757-899x/1274/1/012003. ISSN 1757-8981.
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Kurzfassung
The formation of twinned dendrites was investigated in orthorhombic CrB-structured NiGd. A NiGd droplet embedded in borosilicate glass-flux was processed by differential scanning calorimetry. A small undercooling of ≈ 20 °C was reached and a cross-section of the solidified sample was analyzed with EBSD. A twinned dendrite is found, that exhibits a twin boundary in its center, both parts sharing a direction and a misorientation angle of 40° between its two parts. The present findings are in agreement with model predictions for CrB-structured alloy solidification based on the investigation of deeply undercooled and homogeneously nucleating NiZr. The present investigation on NiGd serves as a first important step to validate the model's predictions. Due to the observation of twinned dendrites at small undercoolings, the present study may further serve as a first-step to extend the model to heterogeneous growth regimes.
elib-URL des Eintrags: | https://elib.dlr.de/188932/ | ||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||
Titel: | Twinned dendrites in CrB-structured intermetallic NiGd | ||||||||||||||||||||
Autoren: |
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Datum: | 2022 | ||||||||||||||||||||
Erschienen in: | IOP Conference Series : Materials Science and Engineering | ||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||
Gold Open Access: | Ja | ||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||
DOI: | 10.1088/1757-899x/1274/1/012003 | ||||||||||||||||||||
Verlag: | Institute of Physics (IOP) Publishing | ||||||||||||||||||||
ISSN: | 1757-8981 | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | Nucleation ; Twinning ; Dendrite ; Quasicrystal ; NiZr ; NiGd ; grain boundary ; crystal growth ; CrB ; orthorhombic ; undercooling | ||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||||||
HGF - Programmthema: | Forschung unter Weltraumbedingungen | ||||||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||||||
DLR - Forschungsgebiet: | R FR - Forschung unter Weltraumbedingungen | ||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Nutzerzentrum Forschung unter Weltraumbedingungen | ||||||||||||||||||||
Standort: | Köln-Porz | ||||||||||||||||||||
Institute & Einrichtungen: | Institut für Materialphysik im Weltraum | ||||||||||||||||||||
Hinterlegt von: | Niersbach, Till | ||||||||||||||||||||
Hinterlegt am: | 17 Okt 2022 10:25 | ||||||||||||||||||||
Letzte Änderung: | 11 Feb 2025 13:39 |
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