Deformation and strengthening mechanisms of a carbon nanotube reinforced aluminum composite

IMR OpenIR

	Deformation and strengthening mechanisms of a carbon nanotube reinforced aluminum composite
	Mokdad, F.; Chen, D. L.; Liu, Z. Y.; Xiao, B. L.; Ni, D. R.; Ma, Z. Y.; Chen, DL (reprint author), Ryerson Univ, Dept Mech & Ind Engn, 350 Victoria St, Toronto, ON M5B 2K3, Canada.; Ma, ZY (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
	2016-08-01
发表期刊	CARBON
ISSN	0008-6223
卷号	104 页码:64-77
摘要	The objective of this study was to characterize microstructure, texture, and deformation behavior of a carbon nanotube (CNT) reinforced aluminum composite via electron backscatter diffraction (EBSD), X-ray diffraction (XRD), scanning and transmission electron microscopy. The addition of 2.0 wt.% CNTs in a 2024Al alloy led to considerable grain refinement, with a bi-modal distribution of grain misorientation angles positioned at similar to 7 degrees for low-angle grain boundaries and similar to 50 degrees for high-angle grain boundaries. The CNTs were observed to be uniformly dispersed in the matrix while some CNT shortening occurred during ball milling. The grain size reduction and compressive micro-strains in the composite broadened X-ray peaks and resulted in lattice shortening. The macro-texture determined via XRD and micro-texture via EBSD were in good agreement, revealing that the composite contained stronger (112) < 111 > Copper texture and (110) < 001 > Goss texture in comparison with 2024Al base alloy. The deformation resistance of the composite at both room and elevated temperatures was effectively enhanced due to the CNT addition. This was mainly attributed to the role of underlying strengthening mechanisms: Hall-Petch strengthening (significant grain refinement involving the Zener pinning effect of CNTs), and composite strengthening including load transfer, thermal mismatch and Orowan looping. (C) 2016 Elsevier Ltd. All rights reserved.
部门归属	[mokdad, f. ; chen, d. l.] ryerson univ, dept mech & ind engn, 350 victoria st, toronto, on m5b 2k3, canada ; [liu, z. y. ; xiao, b. l. ; ni, d. r. ; ma, z. y.] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china
学科领域	Chemistry ; Materials Science
资助者	Natural Sciences and Engineering Research Council of Canada (NSERC); National Basic Research Program of China [2011CB932603, 2012CB619600]; CAS/SAFEA International Partnership Program for Creative Research Teams; Premier's Research Excellence Award (PREA); NSERC-Discovery Accelerator Supplement (DAS) Award; AUTO21 Network of Centers of Excellence; Canada Foundation for Innovation (CFI); Ryerson Research Chair (RRC) program
收录类别	sci
语种	英语
WOS记录号	WOS:000375888800009
引用统计	被引频次：150[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/321006/75785
专题	中国科学院金属研究所
通讯作者	Chen, DL (reprint author), Ryerson Univ, Dept Mech & Ind Engn, 350 Victoria St, Toronto, ON M5B 2K3, Canada.; 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	Mokdad, F.,Chen, D. L.,Liu, Z. Y.,et al. Deformation and strengthening mechanisms of a carbon nanotube reinforced aluminum composite[J]. CARBON,2016,104:64-77.
APA	Mokdad, F..,Chen, D. L..,Liu, Z. Y..,Xiao, B. L..,Ni, D. R..,...&Ma, ZY .(2016).Deformation and strengthening mechanisms of a carbon nanotube reinforced aluminum composite.CARBON,104,64-77.
MLA	Mokdad, F.,et al."Deformation and strengthening mechanisms of a carbon nanotube reinforced aluminum composite".CARBON 104(2016):64-77.