High-strength bulk al-based bimodal ultrafine eutectic composite with enhanced plasticity

Jin Man Park, Norbert Mattern, Uta Kühn, Jürgen Eckert, Ki Buem Kim, Won Tae Kim, Kamanio Chattopadhyay, Do Hyang Kim

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

An in situ bulk ultrafine bimodal eutectic Al-Cu-Si composite was synthesized by solidification. This heterostructured composite with microstructural length scale hierarchy in the eutectic microstructure, which combines an ultrafine-scale binary cellular eutectic (α-Al + Al 2Cu) and a nanometer-sized anomalous ternary eutectic (α-Al + Al2Cu + Si), exhibits high fracture strength (1.1 ±0.1 GPa) and large compressive plastic strain (11 ± 2%) at room temperature. The improved compressive plasticity of the bimodal-nanoeutectic composite originates from homogeneous and uniform distribution of inhomogeneous plastic deformation (localized shear bands), together with strong interaction between shear bands in the spatially heterogeneous structure.

Original languageEnglish
Pages (from-to)2605-2609
Number of pages5
JournalJournal of Materials Research
Volume24
Issue number8
DOIs
Publication statusPublished - 2009 Aug 1

Fingerprint

eutectic composites
high strength
plastic properties
eutectics
Eutectics
Plasticity
Shear bands
Composite materials
composite materials
Plastic deformation
shear
fracture strength
solidification
plastic deformation
hierarchies
Solidification
Fracture toughness
plastics
microstructure
Microstructure

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Park, Jin Man ; Mattern, Norbert ; Kühn, Uta ; Eckert, Jürgen ; Kim, Ki Buem ; Kim, Won Tae ; Chattopadhyay, Kamanio ; Kim, Do Hyang. / High-strength bulk al-based bimodal ultrafine eutectic composite with enhanced plasticity. In: Journal of Materials Research. 2009 ; Vol. 24, No. 8. pp. 2605-2609.
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abstract = "An in situ bulk ultrafine bimodal eutectic Al-Cu-Si composite was synthesized by solidification. This heterostructured composite with microstructural length scale hierarchy in the eutectic microstructure, which combines an ultrafine-scale binary cellular eutectic (α-Al + Al 2Cu) and a nanometer-sized anomalous ternary eutectic (α-Al + Al2Cu + Si), exhibits high fracture strength (1.1 ±0.1 GPa) and large compressive plastic strain (11 ± 2{\%}) at room temperature. The improved compressive plasticity of the bimodal-nanoeutectic composite originates from homogeneous and uniform distribution of inhomogeneous plastic deformation (localized shear bands), together with strong interaction between shear bands in the spatially heterogeneous structure.",
author = "Park, {Jin Man} and Norbert Mattern and Uta K{\"u}hn and J{\"u}rgen Eckert and Kim, {Ki Buem} and Kim, {Won Tae} and Kamanio Chattopadhyay and Kim, {Do Hyang}",
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Park, JM, Mattern, N, Kühn, U, Eckert, J, Kim, KB, Kim, WT, Chattopadhyay, K & Kim, DH 2009, 'High-strength bulk al-based bimodal ultrafine eutectic composite with enhanced plasticity', Journal of Materials Research, vol. 24, no. 8, pp. 2605-2609. https://doi.org/10.1557/jmr.2009.0297

High-strength bulk al-based bimodal ultrafine eutectic composite with enhanced plasticity. / Park, Jin Man; Mattern, Norbert; Kühn, Uta; Eckert, Jürgen; Kim, Ki Buem; Kim, Won Tae; Chattopadhyay, Kamanio; Kim, Do Hyang.

In: Journal of Materials Research, Vol. 24, No. 8, 01.08.2009, p. 2605-2609.

Research output: Contribution to journalArticle

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AU - Chattopadhyay, Kamanio

AU - Kim, Do Hyang

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AB - An in situ bulk ultrafine bimodal eutectic Al-Cu-Si composite was synthesized by solidification. This heterostructured composite with microstructural length scale hierarchy in the eutectic microstructure, which combines an ultrafine-scale binary cellular eutectic (α-Al + Al 2Cu) and a nanometer-sized anomalous ternary eutectic (α-Al + Al2Cu + Si), exhibits high fracture strength (1.1 ±0.1 GPa) and large compressive plastic strain (11 ± 2%) at room temperature. The improved compressive plasticity of the bimodal-nanoeutectic composite originates from homogeneous and uniform distribution of inhomogeneous plastic deformation (localized shear bands), together with strong interaction between shear bands in the spatially heterogeneous structure.

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