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Morphological characterization of the Al–Ag–Cu ternary eutectic

  • Amber Genau and Lorenz Ratke
Published/Copyright: June 11, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 103 Issue 4

Abstract

Ternary eutectic microstructures have a level of complexity far exceeding that of binary eutectics. As there is currently no detailed description of ternary eutectic structures in the literature, we have undertaken a systematic investigation of the structures formed by directional solidification of the ternary eutectic Al–Ag–Cu. Using a constant temperature gradient of 3 K mm−1 and solidification velocities between 0.2 and 5 μm s−1, we are able to observe different forms of the eutectic structure with varying degrees of alignment. We describe these structures both qualitatively and quantitatively, using measures including the volume fraction and composition of all phases, the distribution of interphase separations, and the number of nearest neighbor phases. The effects of solid-state transformations on the microstructure are also discussed.

Keywords: Eutectic; Microstructure; Directional solidification
* Correspondence address Dr. Amber Genau University of Alabama at Birmingham Materials Science and Engineering, BEC 254 1150 10th Ave. South Birmingham, AL 35294, USA Tel.: +12059753271 Fax: +12059348485 E-mail:

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Received: 2010-2-2
Accepted: 2011-11-4
Published Online: 2013-06-11
Published in Print: 2012-04-01

© 2012, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.110652
Keywords for this article
Eutectic; Microstructure; Directional solidification

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Mullite 2011
  5. Original Contributions
  6. Mullite and mullite-type crystal structures
  7. Faradaic current in different mullite materials: single crystal, ceramic and cermets
  8. Metakaolin–nanosilver as biocide mullite precursor
  9. Sintering of mullite–β-eucryptite ceramics with very low thermal expansion
  10. Crystal chemistry and properties of mullite-type Bi2M4O9: An overview
  11. Temperature-dependent 57Fe Mössbauer spectroscopy and local structure of mullite-type Bi2(FexAl1–x)4O9 (0.1≤x≤1) solid solutions
  12. Thermal expansion and elastic properties of mullite-type Bi2Ga4O9 and Bi2Fe4O9 single crystals
  13. Single crystal growth and characterization of mullite-type Bi2Mn4O10
  14. Synthesis and electrical conductivity of mullite-type Bi2Al4O9 and (Bi,Ca)2Al4O9 ceramics
  15. New pressure induced phase transitions in mullite-type Bi2(Fe4–xMnx)O10–δ complex oxides
  16. Morphological characterization of the Al–Ag–Cu ternary eutectic
  17. Bainite: Fragmentation of crystallographically homogeneous domains
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  26. Professor Dr.-Ing. Rainer Schmid-Fetzer – 65 Years
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