Evolution of interfacial nanostructures and stress states in Mg matrix composites reinforced with coated continuous carbon fibers

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	Evolution of interfacial nanostructures and stress states in Mg matrix composites reinforced with coated continuous carbon fibers
	W. G. Wang; B. L. Xiao; Z. Y. Ma
	2012
发表期刊	Composites Science and Technology
ISSN	0266-3538
卷号	72 期号:2 页码:152-158
摘要	Magnesium (Mg) matrix composites reinforced with 45 vol.% continuous carbon fibers (C-f) were fabricated using a pressureless infiltration process in vacuum. In order to modify the interface between the C-f and the Mg matrix, the C-f were coated with 5.0 mol.% yttria stabilized zirconia (YSZ) in sol-gel route. The C-f/Mg composite exhibited a tensile strength of 1.08 GPa which reached 90% of the theoretical prediction by means of the rule of mixture. Microstructural examinations revealed the occurrence of interfacial reaction between the YSZ coating and the Mg matrix, producing a similar to 20 nm thick interfacial reaction layer consisting of nanocrystalline particles, which include MgO particles, remaining ZrO2 particles and a small quantity of ZrC particles. Interfacial reaction could induce a large compressive stress in the interfacial layer. As a result, some nanostructured defects, such as edge dislocations, were formed in interfacial layer due to the compressive stress. In the cooling process of fabricating the composite, the phase transformation of the remaining ZrO2 from tetragonal to monoclinic could relax the thermal residual stress of interfacial layer. (C) 2011 Elsevier Ltd. All rights reserved.
部门归属	[wang, w. g.; xiao, b. l.; 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	Metal-matrix Composites (Mmcs) Carbon Fibers Sol-gel Methods Interface Stress Relaxation Transverse Tensile Behavior Thermal Residual-stresses Sicf/ti-6al-4v Composites Nanocrystalline Ceramics Graphite-fiber Zro2 Film Zirconia Phase Transformation Magnesium
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60312
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. G. Wang,B. L. Xiao,Z. Y. Ma. Evolution of interfacial nanostructures and stress states in Mg matrix composites reinforced with coated continuous carbon fibers[J]. Composites Science and Technology,2012,72(2):152-158.
APA	W. G. Wang,B. L. Xiao,&Z. Y. Ma.(2012).Evolution of interfacial nanostructures and stress states in Mg matrix composites reinforced with coated continuous carbon fibers.Composites Science and Technology,72(2),152-158.
MLA	W. G. Wang,et al."Evolution of interfacial nanostructures and stress states in Mg matrix composites reinforced with coated continuous carbon fibers".Composites Science and Technology 72.2(2012):152-158.