Microalloying effect on the microstructure and mechanical properties in Al-Cu based dendrite-ultrafine composites

S. W. Sohn, J. M. Park, W. T. Kim, D. H. Kim

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3 Citations (Scopus)


Microalloying effect of Sn or Ge (1 at.%) on the microstructure and mechanical properties of the hypo-eutectic Al 86Cu 14 alloy has been investigated. The (Al 86Cu 14) 99(Sn and Ge) 1 alloys exhibit a high fracture strength of 0.85 GPa and a large compressive plastic strain of ∼10% at room temperature. The present results suggest that the minor addition of elements having immiscibility (Sn) or extremely limited solubility (Ge) with the main constituent element (Al) in the Al-Cu based dendrite-ultrafine composites has a strong influence on the microstructural evolution of eutectics such as phase constitution, distribution and colony morphology, leading to improve the compressive plasticity.

Original languageEnglish
Pages (from-to)14-17
Number of pages4
JournalJournal of Alloys and Compounds
Publication statusPublished - 2012 Nov 15


All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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