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On the destabilisation of fibrous growth in monotectic alloys

Ratke, Lorenz and Müller, Anja (2006) On the destabilisation of fibrous growth in monotectic alloys. Scripta Materialia, 54, pp. 1217-1220.

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Abstract

Al–Bi alloys of exact monotectic composition were directionally solidified with solidification velocities from 0.3 lm/s to 5 lm/s and temperature gradients from 2 K/mm to 6.5 K/mm. At large gradients and low solidification velocities the monotectic reaction leads to Bismuth fibres in an Aluminium matrix. The Bi fibres are replaced by a string of pearls of Bi droplets at larger velocities or smaller gradients. The transition between both structures is discussed theoretically and compared with the experimental results.

Item URL in elib:https://elib.dlr.de/20763/
Document Type:Article
Title:On the destabilisation of fibrous growth in monotectic alloys
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ratke, LorenzUNSPECIFIEDUNSPECIFIED
Müller, AnjaUNSPECIFIEDUNSPECIFIED
Date:2006
Journal or Publication Title:Scripta Materialia
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Volume:54
Page Range:pp. 1217-1220
Status:Published
Keywords:Directional solidification; Morphological transition; Monotectic alloys
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W FR - Forschung unter Weltraumbedingungen (old)
DLR - Research area:Space
DLR - Program:W FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):W - Vorhaben Materialwissenschaftliche Forschung (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space > Institute of Space Simulation > Center for Solidification of Undercooled Melts (ZEUS)
Deposited By: Ratke, Prof. Lorenz
Deposited On:30 Jan 2006
Last Modified:27 Apr 2009 04:48

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