定向凝固制备Mg98.5Zn0.5Y1合金中LPSO相的结构及其对合金电磁屏蔽性能的影响

doi:10.11896/j.issn.1005-023X.2018.06.003

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Abstract The microstructure of the LPSO phase in Mg_98.5Zn_0.5Y₁ alloy prepared by directional solidification and its effect on electromagnetic shielding performance were investigated. The formation of 14H-type LPSO was observed. For the directional solidification polycrystals, the LPSO exhibited a lamellar shape. By comparing the electromagnetic shielding properties of ordinary cast and directional solidified Mg_98.5Zn_0.5Y₁ alloy, it was found that the ordered LPSO phase could increase the electromagnetic shielding performance. The theoretical model of multi-layer uniform planar and the relationship between electromagnetic shielding performance and orientation of LPSO in magnesium were discussed. By adding the element Zr, the effect of the LPSO width on the electromagne-tic shielding performance was investigated. The result showed that the electromagnetic shielding performance was improved in high frequency due to the addition of Zr.

Key words： Mg_98.5Zn_0.5Y₁ alloy 14H-LPSO crystal structure zirconium electromagnetic shielding

Published: 25 March 2018

CLC number:

TG146.2+2

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	Articles by authors
	XU Zhichao
	FENG Zhongxue
	SHI Qingnan
	YANG Yingxiang
	WANG Xiaoqi
	QI Huarong

Cite this article:

XU Zhichao,FENG Zhongxue,SHI Qingnan, et al. Microstructure of the LPSO Phase in Mg_98.5Zn_0.5Y₁ Alloy Prepared by Directional Solidification and Its Effect on Electromagnetic Shielding Performance[J]. Materials Reports, 2018, 32(6): 865-869.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.06.003 OR http://www.mater-rep.com/EN/Y2018/V32/I6/865

1 Radasky W A. The threat of intentional interference (IEMI) to wired and wireless systems[C]∥Proceedings of the International Zurich Symposium on Electromagnetic Compatibility.Singapore,2006.
2 Gooch J W, Daher J K. Electromagnetic shielding and corrosion protection for aerospace vehicles[M].New York:Springer,2007.
3 刘顺华.电磁波屏蔽及吸波材料.第2版[M].北京:化学工业出版社,2014.
4 Vasquez H, Espinoza L, Lozano K, et al. Simple device for electromagnetic interference shielding effectiveness measurement[C]∥2009 IEEE,2009.
5 Liu X Y, Zhan M S, Wang K. Preparation and characterization of electromagnetic interference shielding polyimide foam[J].Journal of Applied Polymer Science,2012,127(5):4129.
6 Chen X, Liu L, Pan F, et al. Microstructure, electromagnetic shielding effectiveness and mechanical properties of Mg-Zn-Cu-Zr alloys[J].Materials Science & Engineering B,2015,197(1):67.
7 Geetha S, Satheesh Kumar K K, Rao C R K, et al. EMI shielding: Methods and materials—A review[J].Journal of Applied Polymer Science,2009,112(4):2073.
8 Chen X, Liu J, Zhang Z, et al. Effect of heat treatment on electromagnetic shielding effectiveness of ZK60 magnesium alloy[J].Materials & Design,2012,42:327.
9 Xu Z C, Shi Q N, Feng Z X. Advances in application of magnesium alloys LPSO structure[J].Hot Working Technology,2015(18):22(in Chinese).
徐志超,史庆南,冯中学.镁合金中LPSO相的应用研究进展[J].热加工工艺,2015(18):22.
10 Schulz R B, Plantz V C, Brush D R. Shielding theory and practice[J].IEEE Transactions on Electromagnetic Compatibility,1988,30(3):187.
11 Lu Ruopeng. Microstructure evolution of LPSO phase and the corresponding damping capacities and mechanical properties in Mg-Zn-Y alloys[D].Chongqing:Chongqing University,2015(in Chinese).
鲁若鹏. Mg-Zn-Y合金中LPSO相的调控及其对阻尼和力学性能的影响机制研究[D].重庆:重庆大学,2015.
12 Zhu Y M, Weyland M, Morton A J, et al. The building block of long-period structures in Mg-RE-Zn alloys[J].Scripta Materialia,2009,60:980.
13 Tang P Y, Wu M M, Tang B Y, et al. Microstructure of 18R-type long period ordered structure phase in Mg97Y2Zn1 alloy[J].Transactions of Nonferrous Metals Society of China,2011,21(4):801.
14 Shao X H, Yang Z Q, Ma X L. Strengthening and toughening mechanisms in Mg-Zn-Y alloy with a long period stacking ordered structure[J].Acta Materialia,2010,58(14):4760.
15 Zhu Y M, Morton A J, Nie J F. The 18R and 14H long-period stacking ordered structures in Mg-Y-Zn alloys[J].Acta Materialia,2010,58(8):2936.
16 Schulz R B, Plantz V C, Brush D R. Shielding theory and practice[J].IEEE Transactions on Electromagnetic Compatibility,1992,30(3):187.
17 Lv B J, Peng J, Zhu L L, et al. The effect of 14H LPSO phase on dynamic recrystallization behavior and hot workability of Mg-2.0Zn-0.3Zr-5.8Y alloy[J].Materials Science & Engineering A,2014,599(1):150.