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

doi:10.1016/j.jallcom.2012.06.127

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article

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 language	English
Pages (from-to)	14-17
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	541
DOIs	https://doi.org/10.1016/j.jallcom.2012.06.127
Publication status	Published - 2012 Nov 15

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All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Cite this

Sohn, S. W., Park, J. M., Kim, W. T., & Kim, D. H. (2012). Microalloying effect on the microstructure and mechanical properties in Al-Cu based dendrite-ultrafine composites. Journal of Alloys and Compounds, 541, 14-17. https://doi.org/10.1016/j.jallcom.2012.06.127

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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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AU - Kim, D. H.

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10.1016/j.jallcom.2012.06.127