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Mechanical properties of aluminum-based nanocomposite reinforced with fullerenes 被引量:1
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作者 kwangmin choi Jiyeon SEO +1 位作者 Donghyun BAE Hyunjoo choi 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2014年第S1期47-52,共6页
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 aggregat... 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. 展开更多
关键词 ALUMINUM FULLERENES ball-milling powder metallurgy COMPOSITES
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