Dynamic fracture toughness of 6061Al composites reinforced with SiC particulates

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	Dynamic fracture toughness of 6061Al composites reinforced with SiC particulates
	Qian, LH ; Kobayashi, T ; Toda, H ; Wang, ZG
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2001-11-01
卷号	318 期号:1-2 页码:189-196
关键词	fracture toughness dynamic fracture strain rate composites Al alloy
ISSN号	0921-5093
通讯作者	Qian, LH()
英文摘要	Dynamic fracture toughness experiments were conducted at room temperature on 6061Al alloy reinforced with 15 and 25% volume fractions of 9.5mum SiC particulates. The fracture properties were evaluated in terms of crack initiation toughness, crack propagation energy and total absorbed energy. The dynamic fracture of the unreinforced 6061Al alloy was also studied as a comparison. The results of dynamic tests for both composites and matrix alloy are compared with their respective quasi-static cases. It is found that addition of SiC particles can drastically decrease fracture toughness of 6061Al alloy at both quasi-static and dynamic loading rates. 15%SiCp composite shows a considerable increase in crack initiation toughness and a much greater increment of crack propagation energy in dynamic loading case compared with static loading case, whereas 25%SiCp composite exhibits a negligible increment of crack propagation energy and a reduced increase of crack initiation energy in dynamic case in contrast to 15%SiCp composite. Detailed SEM examination of the fracture surfaces and optical observation of microstructures beneath the fracture surfaces of both composites, combined with an in-situ SEM observation, were made to investigate the fracture processes of the composites. (C) 2001 Elsevier Science B.V. All rights reserved.
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000173196700022
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/111899]
专题	金属研究所_中国科学院金属研究所
通讯作者	Qian, LH
作者单位	1.Acad Sinica, Met Res Inst, State Key Lab Fatigue & Fracture Mat, Shenyang 110015, Peoples R China 2.Toyohashi Univ Technol, Dept Prod Syst Engn, Toyohashi, Aichi 4418580, Japan
推荐引用方式 GB/T 7714	Qian, LH,Kobayashi, T,Toda, H,et al. Dynamic fracture toughness of 6061Al composites reinforced with SiC particulates[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2001,318(1-2):189-196.
APA	Qian, LH,Kobayashi, T,Toda, H,&Wang, ZG.(2001).Dynamic fracture toughness of 6061Al composites reinforced with SiC particulates.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,318(1-2),189-196.
MLA	Qian, LH,et al."Dynamic fracture toughness of 6061Al composites reinforced with SiC particulates".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 318.1-2(2001):189-196.