Mechanical properties of aluminum-based nanocomposite reinforced with fullerenes

Kwangmin Choi, Jiyeon Seo, Donghyun Bae, Hyunjoo Choi

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The strengthening effect of fullerenes in aluminum matrix composites was investigated. The composites are produced using a two-step ball-milling technique combined with a hot rolling process. First, fullerene aggregates, where fullerene molecules initially come together to form giant particles (∼200 μm in diameter) via van der Waals bonding, are shattered into smaller particles (∼1 μm in diameter) by planetary milling. Second, primarily ball-milled fullerenes are dispersed in aluminum powder via attrition milling. Finally, aluminum/fullerene composite powder is consolidated by hot-rolling at 480 °C. For the composite sheet, grain refinement strengthening and dispersion hardening by fullerenes are accomplished at the same time, thereby exhibiting HV ∼222 of Vickers hardness (e.g., ∼740 MPa of yield strength) with only 2% (volume fraction) of fullerenes.

Original languageEnglish
Pages (from-to)s47-s52
JournalTransactions of Nonferrous Metals Society of China (English Edition)
Volume24
Issue numberSUPPL. 1
DOIs
Publication statusPublished - 2014 Jan 1

Fingerprint

Fullerenes
fullerene
Aluminum
fullerenes
mechanical property
Nanocomposites
nanocomposites
aluminum
mechanical properties
Mechanical properties
composite materials
Hot rolling
Strengthening (metal)
Composite materials
Powders
balls
Dispersion hardening
comminution
Vickers hardness
Grain refinement

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Geotechnical Engineering and Engineering Geology
  • Metals and Alloys
  • Materials Chemistry

Cite this

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abstract = "The strengthening effect of fullerenes in aluminum matrix composites was investigated. The composites are produced using a two-step ball-milling technique combined with a hot rolling process. First, fullerene aggregates, where fullerene molecules initially come together to form giant particles (∼200 μm in diameter) via van der Waals bonding, are shattered into smaller particles (∼1 μm in diameter) by planetary milling. Second, primarily ball-milled fullerenes are dispersed in aluminum powder via attrition milling. Finally, aluminum/fullerene composite powder is consolidated by hot-rolling at 480 °C. For the composite sheet, grain refinement strengthening and dispersion hardening by fullerenes are accomplished at the same time, thereby exhibiting HV ∼222 of Vickers hardness (e.g., ∼740 MPa of yield strength) with only 2{\%} (volume fraction) of fullerenes.",
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Mechanical properties of aluminum-based nanocomposite reinforced with fullerenes. / Choi, Kwangmin; Seo, Jiyeon; Bae, Donghyun; Choi, Hyunjoo.

In: Transactions of Nonferrous Metals Society of China (English Edition), Vol. 24, No. SUPPL. 1, 01.01.2014, p. s47-s52.

Research output: Contribution to journalArticle

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