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
刊名	Composites Science and Technology
	1999
卷号	59 期号:2 页码:263-270
关键词	particle composites nanostructures creep mechanical properties compression high-temperature creep silicon-carbide strain-rate behavior powders stress alloy
ISSN号	0266-3538
中文摘要	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.
原文出处	://WOS:000078692800008
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/37456]
专题	金属研究所_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.