Elevated temperature tensile properties and thermal expansion of CNT/2009Al composites

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	Elevated temperature tensile properties and thermal expansion of CNT/2009Al composites
	Z. Y. Liu; B. L. Xiao; W. G. Wang; Z. Y. Ma
	2012
发表期刊	Composites Science and Technology
ISSN	0266-3538
卷号	72 期号:15 页码:1826-1833
摘要	1.5 vol.% and 4.5 vol.% carbon nanotubes reinforced 2009Al (CNT/2009Al) composites with homogeneously dispersed CNTs and refined matrix grains, were fabricated using powder metallurgy (PM) followed by 4-pass friction stir processing (FSP). Tensile properties of the composites between 293 and 573 K and the coefficient of thermal expansion (CTE) from 293 to 473 K were tested. It was indicated that load transfer mechanism still takes effect at temperatures elevated up to 573 K, thus the yield strength of the 1.5 vol.% CNT/2009Al composite at 423-573 K, was enhanced compared with the 2009Al matrix. However, for the 4.5 vol.% CNT/2009Al composite, the yield strength at 573 K was even lower than that for the matrix, due to the quicker softening of ultrafine-grained matrix. Compared with the 2009Al matrix, the CTEs of the composites were greatly reduced for the zero thermal expansion and high modulus of the CNTs and could be well predicted by the Schapery's model. (C) 2012 Elsevier Ltd. All rights reserved.
部门归属	[liu, z. y.; xiao, b. l.; wang, w. g.; ma, z. y.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;ma, zy (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china.;zyma@imr.ac.cn
关键词	Carbon Nanotubes Metal-matrix Composite Thermal Properties Powder Processing Friction Stir Processing Aluminum-matrix Composites Carbon Nanotubes Behavior Dispersion Strength Alloys
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60128
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Y. Liu,B. L. Xiao,W. G. Wang,et al. Elevated temperature tensile properties and thermal expansion of CNT/2009Al composites[J]. Composites Science and Technology,2012,72(15):1826-1833.
APA	Z. Y. Liu,B. L. Xiao,W. G. Wang,&Z. Y. Ma.(2012).Elevated temperature tensile properties and thermal expansion of CNT/2009Al composites.Composites Science and Technology,72(15),1826-1833.
MLA	Z. Y. Liu,et al."Elevated temperature tensile properties and thermal expansion of CNT/2009Al composites".Composites Science and Technology 72.15(2012):1826-1833.