Eutectic Solidification of Ternary Al-Cu-Ag Alloys: Coupled Growth of α(Al) and Al2Cu in Univariant Reaction

U. Hecht; Victor T. Witusiewicz; A. Drevermann; B. Böttger; S. Rex

doi:10.4028/www.scientific.net/MSF.508.57

Paper Titles

Formation of the Microstructure in a Rapid Directionally Solidified Immiscible Alloy
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Microstructure Evolution in Rapidly Solidified Immiscible Alloys
p.37

Monotectic Growth: Unanswered Questions
p.45

Microstructures Observed during Directional Solidification along the Univariant Eutectic Reaction in a Ternary Al-Cu-Si Alloy
p.51

Eutectic Solidification of Ternary Al-Cu-Ag Alloys: Coupled Growth of α(Al) and Al₂Cu in Univariant Reaction
p.57

Solidification of Hypereutectic Thin Wall Ductile Cast Iron
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X-Ray Monitoring of Solidification Phenomena in Al-Cu Alloys
p.69

In Situ and Real Time Investigation of Directional Solidification of Al - Ni Alloys by Synchrotron Imaging
p.75

Metastable Phase Formation in Undercooled Nd-Fe-B Alloys Investigated by In Situ Diffraction Using Synchrotron Radiation
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HomeMaterials Science ForumMaterials Science Forum Vol. 508Eutectic Solidification of Ternary Al-Cu-Ag...

Eutectic Solidification of Ternary Al-Cu-Ag Alloys: Coupled Growth of α(Al) and Al₂Cu in Univariant Reaction

Abstract:

Coupled, regular eutectic growth of α(Al) and Al2Cu from ternary Al-Cu-Ag liquid alloys is investigated with focus on the formation and the characteristics of eutectic cells in unidirectionally solidified, polycrystalline, bulk samples. The topologic anisotropy of the lamellar eutectic leads to destabilization along the lamellae with elongated cells being intermediate to stable cells, irrespective of the crystallographic orientation of the phases. The formation of stable cellular patterns with elongated or regular cell structure is explained with reference to the crystal orientation of the phases α(Al) and Al2Cu, measured by electron backscatter diffraction (EBSD).

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Materials Science Forum (Volume 508)

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57-62

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.508.57

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Online since:

March 2006

Authors:

U. Hecht, Victor T. Witusiewicz, A. Drevermann, B. Böttger, S. Rex

Keywords:

Crystal Orientation, Eutectic Cell, Eutectic Growth, Morphological Transition, Ternary Alloys

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