High temperature creep behavior of nanometric Si3N4 particulate reinforced aluminium composite

IMR OpenIR

	High temperature creep behavior of nanometric Si3N4 particulate reinforced aluminium composite
	Z. Y. Ma; S. C. Tjong; Y. L. Li; Y. Liang
	1997
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	225 期号:1-2 页码:125-134
摘要	Tensile creep tests were carried out on the commercially pure aluminum reinforced with amorphous nanometric Si3N4 particulates at 573, 623 and 673 K. The creep resistance of the nanometric Si3N4 particulates composite was about two orders of magnitude higher than that of the micrometric SiC particulate composite. The steady state creep rate of the nanometric Si3N4 particulates composites was somewhat decreased at 573 K with increasing Si3N4 vol. percent from 1 to 2. However, the creep rates at 623 and 673 K were independent of Si3N4 content. The nanometric particulate composites exhibited an apparent stress exponent ranging from 13.41 to 16.47 and an apparent activation energy of 221-259 kJ mol(-1). The apparent stress exponents appeared to decrease with increasing temperatures. The creep data were rationalized using a substructure-invariant model with a stress exponent of 8 together with a threshold stress. The transmission electron microscope observations proved the invariance of the microstructure of the composite during the creep deformation. (C) 1997 Elsevier Science S.A.
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.
关键词	Tensile Creep Tests Stress Exponent Electron Microscope Observations Steady-state Creep Matrix Composites Sic Composites Silicon Microstructure Stresses
URL	查看原文
WOS记录号	WOS:A1997XK18300014
引用统计	被引频次：46[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/321006/38049
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,et al. High temperature creep behavior of nanometric Si3N4 particulate reinforced aluminium composite[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,1997,225(1-2):125-134.
APA	Z. Y. Ma,S. C. Tjong,Y. L. Li,&Y. Liang.(1997).High temperature creep behavior of nanometric Si3N4 particulate reinforced aluminium composite.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,225(1-2),125-134.
MLA	Z. Y. Ma,et al."High temperature creep behavior of nanometric Si3N4 particulate reinforced aluminium composite".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 225.1-2(1997):125-134.