EFFECTS OF DOUBLE EXTRUSION ON THE MICROSTRUCTURE AND TENSILE PROPERTY OF THE PM PROCESSED SiCp/2009Al COMPOSITES

doi:10.3724/SP.J.1037.2010.00207

IMR OpenIR

	EFFECTS OF DOUBLE EXTRUSION ON THE MICROSTRUCTURE AND TENSILE PROPERTY OF THE PM PROCESSED SiCp/2009Al COMPOSITES
	Liu Zhenyu; Wang Quanzhao; Xiao Bolue; Ma Zongyi; Liu Yue
通讯作者	Xiao Bolue(blxiao@imr.ac.cn)
	2010-09-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	46 期号:9 页码:1121-1127
摘要	Powder metallurgy (PM), as an important method of fabricating SiC particle reinforced aluminum matrix (SiCp/Al) composites, has advantages in obtaining good interfacial bonding and enhancing tensile strength over casting or infiltrating method. The primary process of the PM method involves mixing, compaction and subsequent secondary plastic deformation. Especially, secondary plastic deformation is an important process to destroy the oxidation film on the Al particle surfaces and enhance Al-SiC bonding. However, the incorporation of the SIC particles restricts plastic flow ability of the composite and makes it difficult to be subjected to heavy single-step plastic deformation, such as single hot extrusion, hot rolling or hot forging. Instead, multi-step deformation is a critical processing approach for the SiCp/Al composites with low deformability. However, the previous attentions were mostly focused on single-step processing, multi-step plastic deformation of the SiCp/Al composites was seldom discussed. In this paper, 20%SiCp/2009Al (volume fraction) composite was fabricated using a common PM method and the effects of double extrusion on the microstructure and tensile property of the composite were investigated. It is indicated that the double extrusion could refine the SiCp size, align the SiCp and increase the aspect ratio of the SiCp, but did not exert critical effects of the grain size and < 111 > texture of the matrix. However, the average distance between the SiCp along the extrusion direction increased after the double extrusion, more easily inducing a SiCp-poor band which aligned approximately perpendicularly to the extrusion direction. This resulted in a decrease in the strength and an increase in the elongation along the extrusion direction.
关键词	powder metallurgy composite aluminum alloy double extrusion SiCp-poor band
DOI	10.3724/SP.J.1037.2010.00207
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000282804800016
出版者	SCIENCE PRESS
引用统计	被引频次：8[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/321006/103103
专题	中国科学院金属研究所
通讯作者	Xiao Bolue
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Liu Zhenyu,Wang Quanzhao,Xiao Bolue,et al. EFFECTS OF DOUBLE EXTRUSION ON THE MICROSTRUCTURE AND TENSILE PROPERTY OF THE PM PROCESSED SiCp/2009Al COMPOSITES[J]. ACTA METALLURGICA SINICA,2010,46(9):1121-1127.
APA	Liu Zhenyu,Wang Quanzhao,Xiao Bolue,Ma Zongyi,&Liu Yue.(2010).EFFECTS OF DOUBLE EXTRUSION ON THE MICROSTRUCTURE AND TENSILE PROPERTY OF THE PM PROCESSED SiCp/2009Al COMPOSITES.ACTA METALLURGICA SINICA,46(9),1121-1127.
MLA	Liu Zhenyu,et al."EFFECTS OF DOUBLE EXTRUSION ON THE MICROSTRUCTURE AND TENSILE PROPERTY OF THE PM PROCESSED SiCp/2009Al COMPOSITES".ACTA METALLURGICA SINICA 46.9(2010):1121-1127.