Effect of Semi-Solid Isothermal Heat Treatment on Non-dendritic Structure of Mg-7Zn-1Cu-0.3V Magnesium Alloy

doi:10.11896/cldb.19060165

	Effect of Semi-Solid Isothermal Heat Treatment on Non-dendritic Structure of Mg-7Zn-1Cu-0.3V Magnesium Alloy
	Huang, Xiaofeng 1,2; Wei, Langlang 1; Yang, Jianqiao 1; Zhang, Qiaoqiao 1; Shang, Wentao 1; Li, Xujiao 1
刊名	Cailiao Daobao/Materials Reports
	2020-07-25
卷号	34 期号:14 页码:14116-14121
关键词	Coarsening Copper alloys Heat treatment Isotherms Ostwald ripening Vanadium alloys Zinc alloys Dendritic particles Dendritic structures Holding temperatures Isothermal heat treatments Micro-structure evolutions Non-dendritic microstructure Non-dendritic structure Ostwald ripening mechanism
ISSN号	1005023X
DOI	10.11896/cldb.19060165
英文摘要	In this paper, the effects of holding temperature and holding time on the semi-solid non-dendritic microstructure evolution of Mg-7Zn-1Cu-0.3V magnesium alloy were studied by semi-solid isothermal heat treatment. The results show that the semi-solid isothermal heat treatment can transform the original dendritic structure of the Mg-7Zn-1Cu-0.3V alloy into semi-solid non-dendritic structure, and finally obtain small, round and evenly distributed spherical particles. Prolonging the isothermal time or increasing the holding temperature is beneficial to the separation and spheroidization of non-dendritic structures. However, when the holding temperature is too high or the time is too long, the semi-solid particles will merge and grow, and the main evolution mechanism is in accordance with the Ostwald ripening mechanism. During the whole isothermal heat treatment process, the semi-solid microstructure evolution mainly experienced three stages: initial coarsening, tissue separation and spheroidization, particle combination and ripening. The best isothermal heat treatment process of Mg-7Zn-1Cu-0.3V alloy is held for 35 min at the holding temperature of 580. The average size, solid phase rate and shape factor of non-dendritic particles are 33.25 μm, 45% and 1.33, respectively. © 2020, Materials Review Magazine. All right reserved.
语种	中文
出版者	Cailiao Daobaoshe/ Materials Review
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115058]
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	Huang, Xiaofeng,Wei, Langlang,Yang, Jianqiao,et al. Effect of Semi-Solid Isothermal Heat Treatment on Non-dendritic Structure of Mg-7Zn-1Cu-0.3V Magnesium Alloy[J]. Cailiao Daobao/Materials Reports,2020,34(14):14116-14121.
APA	Huang, Xiaofeng,Wei, Langlang,Yang, Jianqiao,Zhang, Qiaoqiao,Shang, Wentao,&Li, Xujiao.(2020).Effect of Semi-Solid Isothermal Heat Treatment on Non-dendritic Structure of Mg-7Zn-1Cu-0.3V Magnesium Alloy.Cailiao Daobao/Materials Reports,34(14),14116-14121.
MLA	Huang, Xiaofeng,et al."Effect of Semi-Solid Isothermal Heat Treatment on Non-dendritic Structure of Mg-7Zn-1Cu-0.3V Magnesium Alloy".Cailiao Daobao/Materials Reports 34.14(2020):14116-14121.