The performance of aluminium-matrix composites with nanometric particulate Si-N-C reinforcement

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	The performance of aluminium-matrix composites with nanometric particulate Si-N-C reinforcement
	Z. Y. Ma; S. C. Tjong; Y. L. Li
	1999
发表期刊	Composites Science and Technology
ISSN	0266-3538
卷号	59 期号:2 页码:263-270
摘要	Aluminium-matrix composites reinforced with nanomatric Si-N-C particles (Si-N-C/Al) were fabricated by a powder-metallurgy process. X-ray diffraction, metallography, tensile, dynamic compression and high-temperature creep tests were used to characterize the microstructure and mechanical properties of these composites. The results showed that the tensile strength of the 1 vol. % Si-N-C/Al composite is equivalent to that of the 15 vol. % SiCp(3.5 mu m)/Al composite. However, the tensile properties of the Si-N-C/Al composite deteriorated considerably with increasing particle content owing to the clustering of particles. The creep resistance of the 1 vol. % Si-N-C/Al composite was at least two orders of magnitude higher than that of the 15 vol. % SiCp(3.5 mu m)/Al composite. Furthermore, the 1 vol. % Si-N-C/Al composite exhibited an apparent stress exponent ranging from 15.7 to 23.0 and an apparent activation energy of 248 kJ/mol. The creep data of the composite was rationalized by using the substructure-invariant model with a stress exponent of 8 together with a threshold stress. The dynamic compression tests indicated that the strength and strain hardening rate of the 1 vol. % Si-N-C/Al composite increase significantly with increasing the strain rate from 10(-3) s(-1) to 10(3) s(-1). (C) 1999 Elsevier Science Ltd. All rights reserved.
部门归属	city univ hong kong, dept phys & mat sci, kowloon, hong kong. chinese acad sci, inst met res, shenyang 110015, peoples r china.;tjong, sc (reprint author), city univ hong kong, dept phys & mat sci, 83 tat chee ave, kowloon, hong kong
关键词	Particle Composites Nanostructures Creep Mechanical Properties Compression High-temperature Creep Silicon-carbide Strain-rate Behavior Powders Stress Alloy
URL	查看原文
WOS记录号	WOS:000078692800008
引用统计	被引频次：34[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/321006/37456
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Y. Ma,S. C. Tjong,Y. L. Li. The performance of aluminium-matrix composites with nanometric particulate Si-N-C reinforcement[J]. Composites Science and Technology,1999,59(2):263-270.
APA	Z. Y. Ma,S. C. Tjong,&Y. L. Li.(1999).The performance of aluminium-matrix composites with nanometric particulate Si-N-C reinforcement.Composites Science and Technology,59(2),263-270.
MLA	Z. Y. Ma,et al."The performance of aluminium-matrix composites with nanometric particulate Si-N-C reinforcement".Composites Science and Technology 59.2(1999):263-270.