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Ratke, Lorenz (2005) Theoretical considerations and experiments on microstructural stability regimes in monotectic alloys. Materials Science and Engineering, 413-414, Seiten 504-508.
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Kurzfassung
Al–Bi and Al–In alloys of monotectic composition were directionally solidified with solidification velocities from 0.3 m/s to 5 m/s and temperature gradients from 2 K/mm to 6.5 K/mm. The monotectic reaction leads to three distinct microstructural morphologies: fibers, strings of pearls and irregular arrays of second phase droplets, depending on processing conditions. The transition from fibers to string of pearls seems to be a Nichols and Mullins instability. The formation of irregularly arranged drops is interpreted as an effect of repeated nucleation ahead of the solidification front.
| elib-URL des Eintrags: | https://elib.dlr.de/20497/ | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Dokumentart: | Zeitschriftenbeitrag | ||||||||
| Titel: | Theoretical considerations and experiments on microstructural stability regimes in monotectic alloys | ||||||||
| Autoren: |
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| Datum: | 2005 | ||||||||
| Erschienen in: | Materials Science and Engineering | ||||||||
| Referierte Publikation: | Ja | ||||||||
| Open Access: | Nein | ||||||||
| Gold Open Access: | Nein | ||||||||
| In SCOPUS: | Nein | ||||||||
| In ISI Web of Science: | Ja | ||||||||
| Band: | 413-414 | ||||||||
| Seitenbereich: | Seiten 504-508 | ||||||||
| Status: | veröffentlicht | ||||||||
| Stichwörter: | Directional solidification, Immiscible alloys, Morphological transitions, Monotectic alloys, Al–Bi; Al–In | ||||||||
| HGF - Forschungsbereich: | Verkehr und Weltraum (alt) | ||||||||
| HGF - Programm: | Weltraum (alt) | ||||||||
| HGF - Programmthema: | W FR - Forschung unter Weltraumbedingungen (alt) | ||||||||
| DLR - Schwerpunkt: | Weltraum | ||||||||
| DLR - Forschungsgebiet: | W FR - Forschung unter Weltraumbedingungen | ||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | W - Vorhaben Materialforschung unter Mikro-g (alt) | ||||||||
| Standort: | Köln-Porz | ||||||||
| Institute & Einrichtungen: | Institut für Materialphysik im Weltraum > Institut für Raumsimulation | ||||||||
| Hinterlegt von: | Ratke, Prof. Lorenz | ||||||||
| Hinterlegt am: | 15 Feb 2006 | ||||||||
| Letzte Änderung: | 27 Apr 2009 04:46 |
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