Microstructure and mechanical properties of an extruded Mg-Dy-Ni alloy

doi:10.1016/j.msea.2019.06.006

	Microstructure and mechanical properties of an extruded Mg-Dy-Ni alloy
	Bi, Guangli 1,3; Han, Yuxiang 1,3; Jiang, Jing 1,3; Li, Yuandong 1,3; Zhang, Duyao 2; Qiu, Dong 2; Easton, Mark 2
刊名	Materials Science and Engineering A
	2019-07-08
卷号	760 页码:246-257
关键词	Age hardening Binary alloys Dysprosium alloys Grain refinement Grain size and shape Mechanical properties Metal testing Microstructure Nickel alloys Precipitation (chemical) Tensile strength Tensile testing Ternary alloys Age hardening behaviors Dispersion strengthening Long period stacking orders LPSO Microstructure and mechanical properties Ni alloys Precipitation strengthening Ultimate tensile strength
ISSN号	09215093
DOI	10.1016/j.msea.2019.06.006
英文摘要	The microstructure and mechanical properties of an extruded Mg-12Dy-1.1Ni alloy have been investigated in this paper. The microstructure of the as-extruded alloy consisted of α-Mg matrix, Mg2Dy phase and a lamellar long-period stacking order (LPSO) phase distributed along the extrusion direction. Ageing the extruded alloy at 250 °C showed double peaks at 54 h and 108 h during ageing. The first ageing peak was due to a high number density of blocky 18R LPSO phases in conjunction with the precipitation of underaged 14H LPSO phase. The second ageing peak mainly arose from the precipitation of high volume fraction of 14H LPSO phases in the grain interior. Tensile testing indicated that the extruded alloy aged for 108 h exhibited the highest yield and ultimate tensile strengths from room temperature to 300 °C. The high tensile strengths of the alloy are mainly attributed to grain refinement and precipitation strengthening of 14H LPSO phase and dispersion strengthening of blocky 18R LPSO phase. © 2019 Elsevier B.V.
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000474501200026
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150527]
专题	材料科学与工程学院兰州理工大学
作者单位	1.School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Center for Additive Manufacturing, School of Engineering, RMIT University, Melbourne; VIC; 3001, Australia 3.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Bi, Guangli,Han, Yuxiang,Jiang, Jing,et al. Microstructure and mechanical properties of an extruded Mg-Dy-Ni alloy[J]. Materials Science and Engineering A,2019,760:246-257.
APA	Bi, Guangli.,Han, Yuxiang.,Jiang, Jing.,Li, Yuandong.,Zhang, Duyao.,...&Easton, Mark.(2019).Microstructure and mechanical properties of an extruded Mg-Dy-Ni alloy.Materials Science and Engineering A,760,246-257.
MLA	Bi, Guangli,et al."Microstructure and mechanical properties of an extruded Mg-Dy-Ni alloy".Materials Science and Engineering A 760(2019):246-257.