Modelling of carbon nanotube dispersion and strengthening mechanisms in Al matrix composites prepared by high energy ball milling-powder metallurgy method

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	Modelling of carbon nanotube dispersion and strengthening mechanisms in Al matrix composites prepared by high energy ball milling-powder metallurgy method
	Liu, Z. Y. ; Xiao, B. L. ; Wang, W. G. ; Ma, Z. Y.
刊名	COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
	2017-03-01
卷号	94 页码:189-198
关键词	A. Metal-matrix composites (MMCs) A. Carbon nanotube B. Strength C. Analytical modelling
ISSN号	1359-835X
通讯作者	Ma, ZY (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
中文摘要	Carbon nanotube (CNT) reinforced Al-5Mg composites were prepared by combining ball milling, hot pressing and subsequent hot extrusion. CNT distribution during milling and strengthening mechanism of the composites were investigated. A model based on the ratio of minimum necessary time for uniformly dispersing CNT to flattening time of composite powders was proposed to analyze the effect of milling rotation rate on CNT distribution, and it indicated that both low and high milling rotation rates are not beneficial to CNT distribution, due to small deformation ratio and severe cold-welding, respectively. Under a milling rotation rate of 400 rpm, CNTs could be uniformly dispersed after 8 h of milling and aligned along the extruding direction after extrusion. Elastic moduli and strengths of the composites were significantly increased. Load transfer, grain refinement, and mismatch dislocation mechanisms were determined to contribute to the strength increase of CNT/Al-5Mg composites. (C) 2016 Elsevier Ltd. All rights reserved.
学科主题	Engineering, Manufacturing ; Materials Science, Composites
收录类别	SCI
资助信息	National Basic Research Program of China [2012CB619600]; CAS-SAFEA International Partnership Program for Creative Research Teams; National Natural Science Foundation of China [51501189]
语种	英语
公开日期	2017-08-17
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/78258]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Liu, Z. Y.,Xiao, B. L.,Wang, W. G.,et al. Modelling of carbon nanotube dispersion and strengthening mechanisms in Al matrix composites prepared by high energy ball milling-powder metallurgy method[J]. COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING,2017,94:189-198.
APA	Liu, Z. Y.,Xiao, B. L.,Wang, W. G.,&Ma, Z. Y..(2017).Modelling of carbon nanotube dispersion and strengthening mechanisms in Al matrix composites prepared by high energy ball milling-powder metallurgy method.COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING,94,189-198.
MLA	Liu, Z. Y.,et al."Modelling of carbon nanotube dispersion and strengthening mechanisms in Al matrix composites prepared by high energy ball milling-powder metallurgy method".COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING 94(2017):189-198.