Microstructural evolution and high-temperature compressive properties of an extruded Mg-Dy-Zn alloy sheet

doi:10.3139/146.111677

	Microstructural evolution and high-temperature compressive properties of an extruded Mg-Dy-Zn alloy sheet
	Bi, Guangli 1; Han, Yuxiang 1; Jiang, Jing 1; Luo, Xiaomei 1; Jiang, Chunhong 2; Huang, Xiaofeng 1; Cao, Chi 1; Li, Yuandong 1; Y., Ma
刊名	International Journal of Materials Research
	2018-09-01
卷号	109 期号:9 页码:830-836
关键词	Compressive strength Dynamic recrystallization Grain boundary sliding Grain growth Grain refinement Magnesium alloys Microstructural evolution Ternary alloys Zinc alloys Compressive properties Dislocation movement High temperature compressive properties Long period stacking ordered phase Long-period stacking ordered structure Precipitation strengthening Ultimate compressive strength Zn alloys
ISSN号	18625282
DOI	10.3139/146.111677
英文摘要	Microstructural evolution and compressive properties of an extruded Mg-2Dy-0.5Zn (at.%) alloy sheet at 350 8C were investigated. As the compressive strain increased, the volume fraction of dynamic recrystallization increased, the fine lamellar 14H long period stacking ordered phase precipitated in the dynamic recrystallization grain, and the Mg12ZnDy phase with an 18R long period stacking ordered structure gradually bent. These secondary phases not only acted as nucleation sites to promote dynamic recrystallization but also restrained grain growth by inhibiting dislocation movement and grain boundary sliding. The compressive yield strength, ultimate compressive strength, and compressive strain of the alloy sheet were 161 MPa, 212 MPa, and 12.4% at 350 8C, respectively. The high compressive strengths were mainly attributed to grain refinement, kink band strengthening of the 18R long period stacking ordered phase and precipitation strengthening of the fine lamellar 14H long period stacking ordered phase in the dynamic recrystallization grain. © 2018 Carl Hanser Verlag. All rights reserved.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	Carl Hanser Verlag
WOS记录号	WOS:000452547300005
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150545]
专题	材料科学与工程学院兰州理工大学温州泵阀工程研究院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Qilihe District Langongping Road 287#, Lanzhou; 730050, China; 2.Lanshi Foundry Co.,Ltd., Lanzhou, China
推荐引用方式 GB/T 7714	Bi, Guangli,Han, Yuxiang,Jiang, Jing,et al. Microstructural evolution and high-temperature compressive properties of an extruded Mg-Dy-Zn alloy sheet[J]. International Journal of Materials Research,2018,109(9):830-836.
APA	Bi, Guangli.,Han, Yuxiang.,Jiang, Jing.,Luo, Xiaomei.,Jiang, Chunhong.,...&Y., Ma.(2018).Microstructural evolution and high-temperature compressive properties of an extruded Mg-Dy-Zn alloy sheet.International Journal of Materials Research,109(9),830-836.
MLA	Bi, Guangli,et al."Microstructural evolution and high-temperature compressive properties of an extruded Mg-Dy-Zn alloy sheet".International Journal of Materials Research 109.9(2018):830-836.