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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.; 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
Source PublicationCOMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
ISSN1359-835X
Volume94Pages:189-198
AbstractCarbon 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.
description.department[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
KeywordA. metA.-mA.rix Composites (Mmcs) A. cA.bon nA.otube B. Strength C. analytiC.l Modelling
Subject AreaEngineering, Manufacturing ; Materials Science, Composites
Funding OrganizationNational Basic Research Program of China [2012CB619600]; CAS-SAFEA International Partnership Program for Creative Research Teams; National Natural Science Foundation of China [51501189]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78258
Collection中国科学院金属研究所
Corresponding AuthorMa, ZY (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
Recommended Citation
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.
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