Effects of solid solution treatment and cooling on morphology of LPSO phase and precipitation hardening behavior of Mg-Dy-Ni alloy

doi:10.1016/S1003-6326(17)60264-4

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	Effects of solid solution treatment and cooling on morphology of LPSO phase and precipitation hardening behavior of Mg-Dy-Ni alloy
	Yuan Litao 1; Bi Guangli 1; Li Yuandong 1; Jiang Jing 1; Han Yuxiang 1; Fang Daqing 2; Ma Ying 1
刊名	TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
	2017-11
卷号	27 期号:11 页码:2381-2389
关键词	Mg-Dy-Ni alloy LPSO phase microstructure precipitation hardening
ISSN号	1003-6326
DOI	10.1016/S1003-6326(17)60264-4
英文摘要	Effects of solid solution treatment and cooling on the morphology of long period stacking order (LPSO) phase and precipitation hardening behavior of Mg-2Dy-0.5Ni (molar fraction, %) alloy were investigated. Microstructures of the as-cast alloy mainly consisted of alpha-Mg phase, bamboo-like Mg12DyNi phase with LPSO structure distributed between dendrites and small amounts of cubic Dy phases. During solid solution treatment at 565 degrees C for 12 h and subsequent different cooling conditions, dot-shaped, block, fine lamellar and rod-shaped LPSO phases precipitate in Mg matrix, respectively. For continuous cooling conditions (furnace and air cooling), the fine lamellar LPSO phase generally forms in grain interior and its volume fraction increases and block LPSO phase coarsens with increasing cooling time. For discontinuous cooling conditions (air cooling after furnace cooling to 415 and 265 degrees C), the dot-shaped LPSO grows into the rod-shaped phase, which results in an decrease of cooling hardening behavior of alloy.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
CSCD记录号	CSCD:6140332
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000417213600007
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33040]
专题	发展规划处材料科学与工程学院
作者单位	1.Lanzhou University of Technology, State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou, Gansu 730050, China 2.College of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, Shanxi 030024, China
推荐引用方式 GB/T 7714	Yuan Litao,Bi Guangli,Li Yuandong,et al. Effects of solid solution treatment and cooling on morphology of LPSO phase and precipitation hardening behavior of Mg-Dy-Ni alloy[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2017,27(11):2381-2389.
APA	Yuan Litao.,Bi Guangli.,Li Yuandong.,Jiang Jing.,Han Yuxiang.,...&Ma Ying.(2017).Effects of solid solution treatment and cooling on morphology of LPSO phase and precipitation hardening behavior of Mg-Dy-Ni alloy.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,27(11),2381-2389.
MLA	Yuan Litao,et al."Effects of solid solution treatment and cooling on morphology of LPSO phase and precipitation hardening behavior of Mg-Dy-Ni alloy".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 27.11(2017):2381-2389.