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

doi:10.1557/jmr.2009.0297

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

91 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 language	English
Pages (from-to)	2605-2609
Number of pages	5
Journal	Journal of Materials Research
Volume	24
Issue number	8
DOIs	https://doi.org/10.1557/jmr.2009.0297
Publication status	Published - 2009 Aug

Bibliographical note

Funding Information:
The authors thank Dr. J. Jayaraj (IFW-Dresden) for valuable discussions. This work was supported by the Global Research Laboratory Program of the Korea Ministry of Education, Science, and Technology. Additional funding was supported under the AFOSR Task: Basic Research for AOARD 084013 (Dr. Kumar V. Jata, Program Manager).

All Science Journal Classification (ASJC) codes

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

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title = "High-strength bulk al-based bimodal ultrafine eutectic composite with enhanced plasticity",

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}",

note = "Funding Information: The authors thank Dr. J. Jayaraj (IFW-Dresden) for valuable discussions. This work was supported by the Global Research Laboratory Program of the Korea Ministry of Education, Science, and Technology. Additional funding was supported under the AFOSR Task: Basic Research for AOARD 084013 (Dr. Kumar V. Jata, Program Manager).",

year = "2009",

month = aug,

doi = "10.1557/jmr.2009.0297",

language = "English",

volume = "24",

pages = "2605--2609",

journal = "Journal of Materials Research",

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AU - Park, Jin Man

AU - Mattern, Norbert

AU - Kühn, Uta

AU - Eckert, Jürgen

AU - Kim, Ki Buem

AU - Kim, Won Tae

AU - Chattopadhyay, Kamanio

AU - Kim, Do Hyang

N1 - Funding Information: The authors thank Dr. J. Jayaraj (IFW-Dresden) for valuable discussions. This work was supported by the Global Research Laboratory Program of the Korea Ministry of Education, Science, and Technology. Additional funding was supported under the AFOSR Task: Basic Research for AOARD 084013 (Dr. Kumar V. Jata, Program Manager).

PY - 2009/8

Y1 - 2009/8

N2 - 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.

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

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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