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《Acta Materiae Compositae Sinica》 2018-06
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Effect of ball milling on the compressive property and energy absorption capacity of the carbon nanotube reinforced aluminum composite foams

YANG Xudong;YANG Kunming;ZOU Tianchun;ZHAO Naiqin;Sino-European Institute of Aviation Engineering,Civil Aviation University of China;School of Materials Science and Engineering,Tianjin University;The Key Laboratory of Civil Aircraft Airworthiness and Maintenance,Civil Aviation University of China;  
Due to its superior properties,carbon nanotubes(CNTs)have been regarded as a promising reinforcement for the metal matrix composites(MMCs).How to fabricate the MMCs with homogeneous CNTs reinforcement is a hot research field.In the present study,the CNTs reinforced Al composite foams were successfully prepared through a combination of in-situ chemical vapor deposition(CVD),short time ball milling and the space holder method.The effects of ball milling time on the micro morphology,compressive property and energy absorption capacity of the CNTs/Al composite foams were investigated.The results show that with the ball milling time increasing,the microstructure uniformity of the composite foams is improved as a result of the enhanced CNTs dispersion in the Al matrix.Besides,the CNTs are deeply embedded inside the Al matrix after 90 min ball milling.Moreover,compared to the non-ball-milling 3.0 wt% CNTs/Al composite foams,when the ball milling time increases to 90 min,the pore wall hardness,yield strength and energy absorption capacity of the composite foams are increased by 67%,126% and 343%,respectively.
【Fund】: 国家自然科学基金(51301198;51531004)
【CateGory Index】: TB333
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