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The Influence of Convection on Non-Equilibrium Solidification of Silver-Germanium Alloys

Vojtech, D. and Holecek, S. and Barta, C. and Barta, C. jr. and Otto, G. and Görler, G. and Wittmann, K. and Röstel, R. (1997) The Influence of Convection on Non-Equilibrium Solidification of Silver-Germanium Alloys. In: 9th Proceedings of the International Metallurgy and Materials Congress, Volume II, pp. 1525-1530. 9th Intern. Metallurgy and Materials Congress, June 11-15, 1997, Istanbul.

Full text not available from this repository.

Abstract

The hypo- und hypereutectic alloys of typical anomalous silver-germanium eutectic system have been solidified under both terrestrial and space conditions with the goal to create distinct convective flow levels in system. A special arangement during crystallization has been used to decrease the influence of oxide particles in the melt on nucleation process. The convection has been found to affect strongly nucleation and growth processes of both primary crystals and eutectic. Significant differences hav e been observed in morphology and in solute segregation in microstructural components. The obtained results show much greater departure of solidifying system from equilibrium in the limited mobility of components (limited convection). In this way, the space conditions provide valuable environment to understand processes between equilibrium solidification of alloys and their transition into glassy state.

Item URL in elib:https://elib.dlr.de/15216/
Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1999, monograph_id=33,
Title:The Influence of Convection on Non-Equilibrium Solidification of Silver-Germanium Alloys
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Vojtech, D.Inst. of Chemical Technology, PragueUNSPECIFIED
Holecek, S.Inst. of Chemical Technology, PragueUNSPECIFIED
Barta, C.BBT Materials Processing, PragueUNSPECIFIED
Barta, C. jr.BBT Materials Processing, PragueUNSPECIFIED
Otto, G.UNSPECIFIEDUNSPECIFIED
Görler, G.UNSPECIFIEDUNSPECIFIED
Wittmann, K.UNSPECIFIEDUNSPECIFIED
Röstel, R.UNSPECIFIEDUNSPECIFIED
Date:1997
Journal or Publication Title:9th Proceedings of the International Metallurgy and Materials Congress
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:Volume II
Page Range:pp. 1525-1530
Editors:
EditorsEmail
Union of Chambers of Turkish Engineers and Architects Chamber of Metallurgical Engineers, UNSPECIFIED
Status:Published
Keywords:Solidification, Eutectic Solidification, Convection, Microgravity, Silver, Germanium
Event Title:9th Intern. Metallurgy and Materials Congress, June 11-15, 1997, Istanbul
Organizer:Union of Chambers of Turkish Engineers and Architects
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):UNSPECIFIED
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space > Institute of Space Simulation
Deposited By: DLR-Beauftragter, elib
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 13:32

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