Compression Mechanical Behaviour of 7075 Aluminium Matrix Composite Reinforced with Nano-sized SiC Particles in Semisolid State

doi:10.1016/j.jmst.2016.01.015

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	Compression Mechanical Behaviour of 7075 Aluminium Matrix Composite Reinforced with Nano-sized SiC Particles in Semisolid State
	Jiang, Jufu 1,2; Chen, Gang 3; Wang, Ying 4
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2016-11
卷号	32 期号:11 页码:1197-1203
关键词	7075 aluminium matrix composite Nano-sized SiC particles Semisolid compression True stress-strain curve
ISSN号	1005-0302
DOI	10.1016/j.jmst.2016.01.015
英文摘要	The 7075 aluminium matrix composite reinforced with nano-sized SiC particles was fabricated by ultrasonic assisted semisolid stirring method. The compression mechanical behaviour of the fabricated composite in semisolid state was investigated. The results show that the microstructure of the composite before semisolid compression consists of fine and spheroidal solid grains surrounded by liquid phase. Semisolid compression led to a nonuniform plastic deformation of solid grains. A slight plastic deformation occurred in the locations near the free surface due to the dependence of deformation on liquid flow and flow of liquid incorporating solid grains. However, obvious plastic deformation occurred in the central location and location contacting to die due to the contribution of plastic deformation of solid grains. The true stress-strain curve of the sample compressed at 500 degrees C consists of rapid increase of true stress and steady stage. However, rapid increase of true stress and decrease of true stress and steady stage are involved in the true stress-strain curves of the samples compressed at 550, 560, 570, 580 and 590 degrees C. The true stress-strain curve at 600 degrees C is similar to that at 500 degrees C. Apparent viscosity decreases with an increase of shear rate, indicating a shear thinning occurrence. When soaking time increases from 5 min to 15 min, the peak stress and steady stress decrease significantly. A further increase of the soaking time led to a slight change. Peak stress and steady stress increase with increasing volume fraction of SiC particles. A sudden increase or decrease of compression velocity led to a significant increase or decrease of the steady stress. The destruction of the samples compressed at solid state temperature mainly depends on cracks parallel to compression direction. However, the destruction forms of the samples compressed at semisolid temperatures consist of cracks parallel to compression direction and partial collapse. Increasing soaking time led to an obvious change of the destruction forms. Compression velocity affects slightly the macro appearance of the sample compressed at semisolid temperatures. Copyright (C) 2016, The editorial office of Journal of Materials Science & Technology. Published by Elsevier Limited.
资助项目	Fund of the State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology[SKLAB02015003]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000392703300014
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33556]
专题	兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Jiang, Jufu
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China 2.Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China 3.Harbin Inst Technol, Sch Mat Sci & Engn, Weihai 264209, Peoples R China 4.Harbin Inst Technol, Sch Mechatron Engn, Harbin 150001, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Jufu,Chen, Gang,Wang, Ying. Compression Mechanical Behaviour of 7075 Aluminium Matrix Composite Reinforced with Nano-sized SiC Particles in Semisolid State[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2016,32(11):1197-1203.
APA	Jiang, Jufu,Chen, Gang,&Wang, Ying.(2016).Compression Mechanical Behaviour of 7075 Aluminium Matrix Composite Reinforced with Nano-sized SiC Particles in Semisolid State.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,32(11),1197-1203.
MLA	Jiang, Jufu,et al."Compression Mechanical Behaviour of 7075 Aluminium Matrix Composite Reinforced with Nano-sized SiC Particles in Semisolid State".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 32.11(2016):1197-1203.