Solidification behavior of A356 aluminum alloy during rheo-diecasting process with self-inoculation method

	Solidification behavior of A356 aluminum alloy during rheo-diecasting process with self-inoculation method
	Li, Ming 1; Li, Yuan-Dong 1,2; Qiu, Jin 1; Zhang, Ji-Yuan 1; Bi, Guang-Li 1,2; Ma, Ying 1,2
刊名	Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
	2016-11-01
卷号	26 期号:11 页码:2256-2266
关键词	Cooling Eutectics Liquids Morphology Solidification Textures Thin walled structures Undercooling Constitutional undercooling Eutectic silicon Rheo-diecasting Self-inoculation methods Semi-solid forming
ISSN号	10040609
英文摘要	The semisolid slurry of A356 aluminum alloy was prepared by self-inoculation method and the solidification behavior of thin-walled component produced by rheo-diecasting was investigated. The results indicate that the isothermal holding process during slurry preparation has great effect on primary α(Al) particles, but has little effect on the microstructure of secondary solidification in the process of thin-walled rheo-diecasting. When the remaining liquid fills die cavity, due to the large cooling rate provided by metallic dies, the nucleation is expected to take place throughout the entire remaining liquid. The growth of nucleus has two stages, nucleus will grow stably into globular particles with the limited grain size of 6.5 μm, then, as the exist of constitutional undercooling, both primary (α1) particles and secondary (α2) particles will appear unstable growth phenomenon. Compared with original composition of alloy, the remaining liquid closes to the eutectic composition due to the existence of α1 particles, which makes the content of Si in α2 particles higher than that in α1 particles. The eutectic reaction is confined to small intergranular areas due to the presence of fine α2 particles. With high local cooling rate, the eutectic silicon will solidify in fine fibrous or chrysanthemum morphology. © 2016, Science Press. All right reserved.
语种	中文
出版者	Central South University of Technology
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112541]
专题	材料科学与工程学院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Key Laboratory of Non-ferrous Metal Alloys and Processing, Ministry of Education, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Li, Ming,Li, Yuan-Dong,Qiu, Jin,et al. Solidification behavior of A356 aluminum alloy during rheo-diecasting process with self-inoculation method[J]. Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,2016,26(11):2256-2266.
APA	Li, Ming,Li, Yuan-Dong,Qiu, Jin,Zhang, Ji-Yuan,Bi, Guang-Li,&Ma, Ying.(2016).Solidification behavior of A356 aluminum alloy during rheo-diecasting process with self-inoculation method.Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,26(11),2256-2266.
MLA	Li, Ming,et al."Solidification behavior of A356 aluminum alloy during rheo-diecasting process with self-inoculation method".Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals 26.11(2016):2256-2266.