Solidification behavior and rheo-diecasting microstructure of A356 aluminum alloy prepared by self-inoculation method

doi:10.1007/s41230-017-6060-z

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	Solidification behavior and rheo-diecasting microstructure of A356 aluminum alloy prepared by self-inoculation method
	Li, Ming 1; Li, Yuan-dong1,2 ; Huang, Xiao-feng1,2 ; Cao, Chi1,2 ; Ma, Ying1,2
	2017-01
发表期刊	CHINA FOUNDRY
ISSN	1672-6421
卷号	14 期号:1 页码:1-9
摘要	Semisolid slurry of A356 aluminum alloy was prepared by self-inoculation method, and the microstructure and solidification behavior during rheo-diecasting process were investigated. The results indicate that the semisolid slurry of A356 aluminum alloy can be prepared by self-inoculation method at 600 degrees C. Primary alpha-Al particles with fine and spherical morphologies are uniformly distributed when the isothermal holding time of slurry is 3 min. Liquid phase segregation occurs during rheo-diecasting process of semisolid slurry and the primary particles (alpha(1)) show obvious plastic deformation in the area of high stress and low cooling rate. A small amount of dendrites resulting from the relatively low temperature of the shot chamber at the initial stage of secondary solidification are fragmented as they pass through the in-gate during the mould filling process. The amount of dendrite fragments decreases with the increase of filling distance. During the solidification process of the remaining liquid, the nucleation rate of secondary particles (alpha(2)) increases with the increase of cooling rate, and the content of Si in secondary particles (alpha(2)) are larger than primary particles (alpha(1)). With the increase of cooling rate, the content of Si in secondary particles (alpha(2)) gradually increases. The morphologies of eutectic Si in different parts of die casting are noticeably different. The low cooling rate in the first filling positions leads to coarse eutectic structures, while the high cooling rate in the post filling positions promotes small and compact eutectic structures.
关键词	semisolid self-inoculation method secondary solidification dendrite fragments primary particles eutectic structure
DOI	10.1007/s41230-017-6060-z
收录类别	SCI ; SCIE
语种	英语
资助项目	National Natural Science Foundation of China[51464031]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000397064300001
出版者	FOUNDRY JOURNAL AGENCY
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/33410
专题	发展规划处材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室温州泵阀工程研究院
通讯作者	Li, Yuan-dong
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Key Lab Nonferrous Met Alloys & Proc, Minist Educ, Lanzhou 730050, Peoples R China
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室; 兰州理工大学
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Li, Ming,Li, Yuan-dong,Huang, Xiao-feng,et al. Solidification behavior and rheo-diecasting microstructure of A356 aluminum alloy prepared by self-inoculation method[J]. CHINA FOUNDRY,2017,14(1):1-9.
APA	Li, Ming,Li, Yuan-dong,Huang, Xiao-feng,Cao, Chi,&Ma, Ying.(2017).Solidification behavior and rheo-diecasting microstructure of A356 aluminum alloy prepared by self-inoculation method.CHINA FOUNDRY,14(1),1-9.
MLA	Li, Ming,et al."Solidification behavior and rheo-diecasting microstructure of A356 aluminum alloy prepared by self-inoculation method".CHINA FOUNDRY 14.1(2017):1-9.

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