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

IMR OpenIR

	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.; Ma, ZY (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
	2017-03-01
发表期刊	COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
ISSN	1359-835X
卷号	94 页码:189-198
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.; 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.
部门归属	[liu, z. y. ; xiao, b. l. ; ma, z. y.] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china ; [wang, w. g.] liaoning shihua univ, 1 dandong rd, fushun 113001, peoples r china
关键词	A. metA.-mA.rix Composites (Mmcs) A. cA.bon nA.otube B. Strength C. analytiC.l Modelling
学科领域	Engineering, Manufacturing ; Materials Science, Composites
资助者	National Basic Research Program of China [2012CB619600]; CAS-SAFEA International Partnership Program for Creative Research Teams; National Natural Science Foundation of China [51501189]
收录类别	SCI
语种	英语
WOS记录号	WOS:000394193300020
引用统计	被引频次：92[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/78258
专题	中国科学院金属研究所
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.
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.,&Ma, ZY .(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.