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

S. W. Sohn, J. M. Park, W. T. Kim, Do Hyang Kim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

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
Volume541
DOIs
Publication statusPublished - 2012 Nov 15

Fingerprint

Microalloying
Eutectics
Solubility
Mechanical properties
Microstructure
Microstructural evolution
Composite materials
Plasticity
Fracture toughness
Plastic deformation
Temperature
Ultrafine

All Science Journal Classification (ASJC) codes

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

Cite this

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title = "Microalloying effect on the microstructure and mechanical properties in Al-Cu based dendrite-ultrafine composites",
abstract = "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.",
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Microalloying effect on the microstructure and mechanical properties in Al-Cu based dendrite-ultrafine composites. / Sohn, S. W.; Park, J. M.; Kim, W. T.; Kim, Do Hyang.

In: Journal of Alloys and Compounds, Vol. 541, 15.11.2012, p. 14-17.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Microalloying effect on the microstructure and mechanical properties in Al-Cu based dendrite-ultrafine composites

AU - Sohn, S. W.

AU - Park, J. M.

AU - Kim, W. T.

AU - Kim, Do Hyang

PY - 2012/11/15

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AB - 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.

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