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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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.
|Title:||Solidification microstructure and dynamics of metastable phase transformation in undercooled liquid Cu–Fe alloys|
|Journal or Publication Title:||Acta Materialia|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 1749-1757|
|Keywords:||Copper–iron; Immiscible alloy; Rapid solidification; Metastable phase transformation; Kinetics|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W FR - Forschung unter Weltraumbedingungen|
|DLR - Research area:||Space|
|DLR - Program:||W FR - Forschung unter Weltraumbedingungen|
|DLR - Research theme (Project):||W - Vorhaben Materialwissenschaftliche Forschung (old)|
|Institutes and Institutions:||Institute of Materials Physics in Space > Institute of Space Simulation > Center for Solidification of Undercooled Melts (ZEUS)|
|Deposited By:||Prof. Lorenz Ratke|
|Deposited On:||23 Mar 2006|
|Last Modified:||27 Apr 2009 05:04|
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