Static and cyclic creep behaviour of 2024/SiCp and its matrix alloy at high temperature

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	Static and cyclic creep behaviour of 2024/SiCp and its matrix alloy at high temperature
	P. L. Liu; Z. G. Wang; W. L. Wang
	1997
发表期刊	Materials Science and Technology
ISSN	0267-0836
卷号	13 期号:8 页码:667-672
摘要	The tensile creep and tensile-tensile cyclic creep behaviour of 2024/SiCp composite and its matrix alloy have been investigated and analysed at high temperature. It was found that the creep threshold stress of the composite may not be caused by SiCp alone: the matrix alloy also contributes to the threshold stress. The higher threshold stress of the composite compared with that of the matrix alloy can be explained in terms of load transfer in the composite and the value of threshold stress for the matrix alloy. A direct comparison between the composite and its matrix alloy indicates that only below a critical stress does the composite show a creep resistance higher than that of its matrix alloy. The two materials shown cyclic creep retardation in the tested stress range, cyclic creep showing a higher stress exponent and higher apparent activation energies in comparison with static creep. An analysis based on anelasticity is introduced to explain this result. The relationships between rupture lifetimes and applied stress, creep rate, and unloading amount show that the creep fracture mechanism is dominant in the present test condition. (C) 1997 The Institute of Materials.
部门归属	shanghai jiao tong univ,shanghai 200030,peoples r china.;liu, pl (reprint author), acad sinica,inst met res,state key lab fatigue & fracture mat,shenyang 110015,peoples r china
关键词	Reinforced Aluminum Composites Ambient-temperature Copper Stress Acceleration Mg
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/38026
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	P. L. Liu,Z. G. Wang,W. L. Wang. Static and cyclic creep behaviour of 2024/SiCp and its matrix alloy at high temperature[J]. Materials Science and Technology,1997,13(8):667-672.
APA	P. L. Liu,Z. G. Wang,&W. L. Wang.(1997).Static and cyclic creep behaviour of 2024/SiCp and its matrix alloy at high temperature.Materials Science and Technology,13(8),667-672.
MLA	P. L. Liu,et al."Static and cyclic creep behaviour of 2024/SiCp and its matrix alloy at high temperature".Materials Science and Technology 13.8(1997):667-672.