Mechanical properties of aluminum-based nanocomposite reinforced with fullerenes

Kwangmin Choi, Jiyeon Seo, Donghyun Bae, Hyunjoo Choi

Research output: Contribution to journalArticle

17 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

All Science Journal Classification (ASJC) codes

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

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