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Solidification microstructure and dynamics of metastable phase transformation in undercooled liquid Cu–Fe alloys

Zhao, Jiuzhou and He, Jie and Ratke, Lorenz (2006) Solidification microstructure and dynamics of metastable phase transformation in undercooled liquid Cu–Fe alloys. Acta Materialia, 54, pp. 1749-1757.

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Abstract

The solidification behavior of an atomized droplet of a metastable, immiscible Cu–Fe alloy has been investigated experimentally and by numerical simulation. A model is presented to analyze quantitatively the microstructural evolution during the metastable liquid–liquid phase transformation. The model takes into account not only the common actions of nucleation, diffusional growth, and spatial motion of the minority phase spheres, but also the repulsive interaction between the spheres and the solid/liquid interface. The effect of the interface morphology on the collision and coagulation is first discussed. The formation mechanism of an Fe-poor layer and the kinetics of the metastable phase transformation in the undercooled liquid Cu–Fe alloy are sufficiently clarified.

Item URL in elib:https://elib.dlr.de/22878/
Document Type:Article
Title:Solidification microstructure and dynamics of metastable phase transformation in undercooled liquid Cu–Fe alloys
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Zhao, JiuzhouInstitute of Metal Research, Chinese Academy of Sciences, Wenhua Road 72, Shenyang, Niaoning 110016, PR ChinaUNSPECIFIED
He, JieInstitute of Metal Research, Chinese Academy of Sciences, Wenhua Road 72, Shenyang, Niaoning 110016, PR ChinaUNSPECIFIED
Ratke, LorenzUNSPECIFIEDUNSPECIFIED
Date:2006
Journal or Publication Title:Acta 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. 1749-1757
Status:Published
Keywords:Copper–iron; Immiscible alloy; Rapid solidification; Metastable phase transformation; Kinetics
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:23 Mar 2006
Last Modified:27 Apr 2009 05:04

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