Rapid growth of nickel dendrite in highly undercooled Ni-Mo alloys

CORC > 西北工业大学

	Rapid growth of nickel dendrite in highly undercooled Ni-Mo alloys
	Yao WJ(姚文静) ; Wei BB(魏炳波)
刊名	http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=JEXG200306003&dbname=CJFQ2003
	2012-04-24 ; 2012-04-24
关键词	dendrite rapid growth drop tube undercooling Ni-Mo.
中文摘要	Ni-39.3%Mo, Ni-45%Mo hypoeutectic alloys and Ni-47.7%Mo eutectic alloy have been rapidly solidified with different droplet sizes by containerless processing in a drop tube. For Ni-39.3%Mo hypoeutectic alloy, which corresponds to the maximum solid solubility of nickel phase, the solidification microstructure is characterized by nickel dendrite plus (Ni+NiMo) eutectic struc-ture. The undercooling of this alloy up to 182 K has been realized in the experiments. With an in-crease in undercooling, the dendritic microstructure is refined. The microstructural evolution of primary Ni phase in Ni-45%Mo hypoeutectic alloy evolves from remelted dendrite to equiaxed grains, whereas Ni-47.7%Mo eutectic alloy exhibits a structural transition from lamellar eutectic to anomalous eutectic. Theoretical analyses indicate that, for Ni-39.3%Mo, Ni-45%Mo and Ni-47.7%Mo alloys, the nickel phase shows a transition from solutal-diffusion-controlled growth to thermal-diffusion-controlled growth at undercoolings of 66.6, 81.9 and 85.0 K...
语种	中文
出版者	Science in China(Series E:Technological Sciences)
内容类型	期刊论文
源URL	[http://ircloud.calis.edu.cn/hdl/261030/1829]
专题	西北工业大学
推荐引用方式 GB/T 7714	Yao WJ,Wei BB. Rapid growth of nickel dendrite in highly undercooled Ni-Mo alloys[J]. http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=JEXG200306003&dbname=CJFQ2003,2012, 2012.
APA	姚文静,&魏炳波.(2012).Rapid growth of nickel dendrite in highly undercooled Ni-Mo alloys.http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=JEXG200306003&dbname=CJFQ2003.
MLA	姚文静,et al."Rapid growth of nickel dendrite in highly undercooled Ni-Mo alloys".http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=JEXG200306003&dbname=CJFQ2003 (2012).