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

	Effects of solid solution treatment and cooling on morphology of LPSO phase and precipitation hardening behavior of Mg–Dy–Ni alloy
	YUAN, Li-tao 1; BI, Guang-li 1; LI, Yuan-dong 1; JIANG, Jing 1; HAN, Yu-xiang 1; FANG, Da-qing 2; MA, Ying 1
刊名	Transactions of Nonferrous Metals Society of China (English Edition)
	2017-11-01
卷号	27 期号:11 页码:2381-2389
关键词	Age hardening Cooling Dysprosium alloys Hardening Hardness Magnesium alloys Microstructure Morphology Nickel alloys Precipitation (chemical) Continuous cooling Cooling conditions Discontinuous cooling Hardening behavior Long period stacking orders Lpso phase Ni alloys Solid solution treatment
ISSN号	10036326
DOI	10.1016/S1003-6326(17)60264-4
英文摘要	Abstract 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 α-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 °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 °C), the dot-shaped LPSO grows into the rod-shaped phase, which results in an decrease of cooling hardening behavior of alloy. © 2017 The Nonferrous Metals Society of China
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	Nonferrous Metals Society of China, B12 Fuxing Road, Beijing, 100814, China
WOS记录号	WOS:000417213600007
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114602]
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 Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.College of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan; 030024, China
推荐引用方式 GB/T 7714	YUAN, Li-tao,BI, Guang-li,LI, Yuan-dong,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 (English Edition),2017,27(11):2381-2389.
APA	YUAN, Li-tao.,BI, Guang-li.,LI, Yuan-dong.,JIANG, Jing.,HAN, Yu-xiang.,...&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 (English Edition),27(11),2381-2389.
MLA	YUAN, Li-tao,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 (English Edition) 27.11(2017):2381-2389.