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The role of solidification conditions on the microstructural features of AA6111 aluminum strips cast on a horizontal single belt caster

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Published/Copyright: May 18, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 99 Issue 12

Abstract

The effect of the thickness of strips and cooling rates on the macro- and micro-structural features such as grain size, secondary dendrite arm spacing, and intermetallic phases, were studied for AA6111 aluminum alloy cast on a simulator of a horizontal single belt strip casting process. Different strips were investigated. As strip thickness decreased from 2.49 mm to 0.55 mm, the grain size decreased about 56 % and secondary dendrite arm spacing decreased about 56.7 %. An equation was developed based on the results obtained via thermal analysis which relates secondary dendrite arm spacing to cooling rate in this process. The formation and behavior of various complex intermetallic compounds in AA6111 were studied using scanning electron microscopy. The compositions of the precipitates were analyzed using electron probe microanalysis and their most likely stoichiometries determined.

Keywords: Horizontal strip casting; Aluminum alloys; Microstructure; Cooling rate
∗ Correspondence address, Professor Saeed G. Shabestari, Department of Materials and Metallurgical Engineering, Iran, University of Science and Technology (IUST), Narmak, Tehran, Iran, Tel.: +982173912815, Fax: +9821 77240480. E-mail:

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Received: 2008-3-18
Accepted: 2008-9-17
Published Online: 2013-05-18
Published in Print: 2008-12-01

© 2008, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.101780
Keywords for this article
Horizontal strip casting; Aluminum alloys; Microstructure; Cooling rate

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial December 2008
  5. Basic
  6. Thermodynamic description of the C-Fe-Mn system with key experiments and its practical applications
  7. A study of phase equilibria in the Al-rich part of the Al-Mn alloy system
  8. Transient dopant segregation and precipitation in yttrium-doped alumina
  9. Experimental study on gallium activity in the liquid Ga-Bi-Sn alloys using the EMF method with zirconia solid electrolyte
  10. Modeling of the hot deformation behavior of boron microalloyed steels under uniaxial hot-compression conditions
  11. A new kinetic treatment of the oxidation of β-SiAlON powder
  12. Quantification of ∊-martensite after thermocycling in Fe-(17∼25)Mn alloys
  13. The effect of pre-structure process on magnetorheological elastomer performance
  14. Applied
  15. Corrosion protective double layer hard coatings
  16. Interpretation of inorganic melts' surface properties on the basis of chemical status and structural relations
  17. Basic
  18. Achieving ultra-fine grains in AZ61 Mg alloy by friction stir processing
  19. The combined effect of titanic carbide and aluminum phosphide on the refinement of primary silicon in Al-50Si alloy
  20. Applied
  21. The role of solidification conditions on the microstructural features of AA6111 aluminum strips cast on a horizontal single belt caster
  22. Far infrared spectroscopy of Pb0.85Sn0.15Te alloy doped with Ni
  23. DGM News
  24. DGM News
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