Aging behavior of the matrix of aluminum-magnesium-silicon alloy including carbon nanotubes |
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| Authors: | Hiroyuki Fukuda Katsuyoshi KondohJunko Umeda Bunshi Fugetsu |
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| Affiliation: | a Graduate School of Engineering, Osaka University, 1 Yamadaoka, Suita, Osaka, 565-0871, Japanb Joining and Welding Research Institution, Osaka University, 11-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japanc Hokkaido University, 5 Niow, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan |
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| Abstract: | The mechanical behavior of the non-aged and the aged Al-Mg-Si alloy composites reinforced with CNTs was evaluated with tensile test and Vickers hardness test. The composites showed higher mechanical strength than the pristine Al alloy before the aging, although exhibiting lower mechanical strength after the aging. The aging treatment was ineffective to strengthen the Al-Mg-Si alloy composites reinforced with CNTs. EDS elemental mapping clarified the Mg and O concentration around CNTs. The reduction of Al oxide species formed around CNTs facilitated the Mg concentration. Due to the Mg consumption around CNTs, Mg elements in Al matrix decreased, and resulted in the incomplete matrix strengthening after the aging. |
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| Keywords: | Sintering Powder technology Carbon nanotubes Metallic composites |
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