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 › peer-review

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

Bibliographical note

Funding Information:
This work was supported by Defense Acquisition Program Administration (DAPA) and Agency for Defense Development (ADD), and also supported by the Global Research Laboratory (GRL) Program of Korea Ministry of Science and Technology .

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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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.",

author = "Sohn, {S. W.} and Park, {J. M.} and Kim, {W. T.} and Kim, {D. H.}",

note = "Funding Information: This work was supported by Defense Acquisition Program Administration (DAPA) and Agency for Defense Development (ADD), and also supported by the Global Research Laboratory (GRL) Program of Korea Ministry of Science and Technology .",

year = "2012",

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doi = "10.1016/j.jallcom.2012.06.127",

language = "English",

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journal = "Journal of the Less-Common Metals",

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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, D. H.

N1 - Funding Information: This work was supported by Defense Acquisition Program Administration (DAPA) and Agency for Defense Development (ADD), and also supported by the Global Research Laboratory (GRL) Program of Korea Ministry of Science and Technology .

PY - 2012/11/15

Y1 - 2012/11/15

N2 - 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.

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

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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