TY - GEN
T1 - Mechanical properties of aluminium-based nanocomposite reinforced with fullerenes
AU - Choi, Kwangmin
AU - Shin, Se Eun
AU - Bae, Donghyun
AU - Choi, Hyunjoo
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Aluminum has been spot-lighted due to its earth-abundant and light-weight nature. However, usages of aluminum as an engineering material have been limited by its low strength compared to other engineering metals such as steel and titanium. One possible way to strengthen aluminum is reinforcing it with carbon-based nano-materials, which exhibits superior elastic modulus and yield strength. Here, we develop aluminum-based composite, in which each of fullerenes are intended to be uniformly dispersed via three-step ball-milling processes: first, using a planetary-milling process the fullerene particles were shattered into smaller particles by shear force with two different control agents of stearic acid and ethyl alcohol, respectively; second, planetary milling process was repeated to mix the primarily ball-milled fullerenes and pure aluminum powder; third, attrition milling process was carried out for grain refinement of aluminum as well as further dispersion of fullerenes. Finally, the composite powder was consolidated using hot-pressing or hot- rolling. The composite, containing 2vol% fullerenes milled with stearic acid, shows ∼220 Hv in Vickers' hardness.
AB - Aluminum has been spot-lighted due to its earth-abundant and light-weight nature. However, usages of aluminum as an engineering material have been limited by its low strength compared to other engineering metals such as steel and titanium. One possible way to strengthen aluminum is reinforcing it with carbon-based nano-materials, which exhibits superior elastic modulus and yield strength. Here, we develop aluminum-based composite, in which each of fullerenes are intended to be uniformly dispersed via three-step ball-milling processes: first, using a planetary-milling process the fullerene particles were shattered into smaller particles by shear force with two different control agents of stearic acid and ethyl alcohol, respectively; second, planetary milling process was repeated to mix the primarily ball-milled fullerenes and pure aluminum powder; third, attrition milling process was carried out for grain refinement of aluminum as well as further dispersion of fullerenes. Finally, the composite powder was consolidated using hot-pressing or hot- rolling. The composite, containing 2vol% fullerenes milled with stearic acid, shows ∼220 Hv in Vickers' hardness.
UR - http://www.scopus.com/inward/record.url?scp=84899830879&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84899830879&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84899830879
SN - 9781118889084
T3 - TMS Light Metals
SP - 1437
EP - 1440
BT - Light Metals 2014 - At the TMS 2014 Annual Meeting and Exhibition
PB - Minerals, Metals and Materials Society
T2 - Light Metals 2014 - TMS 2014 Annual Meeting and Exhibition
Y2 - 16 February 2014 through 20 February 2014
ER -