Influence of mixed rare earth elements(Y and Ce) on the microstructure and corrosion behaviour of Mg-4Al-3Ca alloy

被引：8

作者：

Chen, Yun ^{[1
]}

Liu, Kejia ^{[1
]}

Hu, Kaixiong ^{[1
]}

Wang, Zhiping ^{[1
]}

Du, Juan ^{[2
]}

机构：

[1] Wuhan Univ Technol, Sch Logist Engn, Wuhan 430063, Hubei, Peoples R China

[2] Wuhan Tech Coll Commun, Mech & Elect Engn, Wuhan 430065, Hubei, Peoples R China

来源：

MATERIALS RESEARCH EXPRESS | 2019年 / 6卷 / 01期

关键词：

Mg-Al-Ca alloys; RE elements; microstructure; corrosion behaviour; AZ91 MAGNESIUM ALLOY; MECHANICAL-PROPERTIES; MN ALLOYS; CA; RESISTANCE; CALCIUM; NACL;

D O I：

10.1088/2053-1591/aae878

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Microstructure of Mg-Al-Ca based alloys was studied by using x-ray diffraction (XRD), scanning electron microscopy (SEM) and electron probe microanalyzer (EPMA). Corrosion morphologies and corrosion behaviour of the alloys were analysed using static weight loss test, electrochemical characterization and SEM imaging. The results reveal that when adding mixed rare earth (RE) elements (Y and Ce) to Mg-4Al-3Ca alloy, the thick strip shaped (Mg,Al)(2)Ca phase was refined and the continuity was changed. Granular Al-RE phase was distributed in the matrix. The Mg-4Al-3Ca-0.5RE alloy has the best corrosion resistance, which is attributed to the combination of a good corrosion barrier, a suitable amount of precipitate phases and a small amount of RE elements addition on the purification of the alloy.

引用

页数：9

共 24 条

[1] Microstructure and corrosion study of porous Mg-Zn-Ca alloy in simulated body fluid [J].

Annur, Dhyah ;

Erryani, Aprilia ;

Lestari, Franciska P. ;

Putrayasa, I. Nyoman ;

Gede, P. A. ;

Kartika, Ika .

MATERIALS RESEARCH EXPRESS, 2017, 4 (03)

[2] Role of alloyed Y in improving the corrosion resistance of extruded Mg-Al-Ca-based alloy [J].

Baek, Soo-Min ;

Kang, Jeong Su ;

Shin, Hyung-Joon ;

Yim, Chang Dong ;

You, Bong Sun ;

Ha, Heon-Young ;

Park, Sung Soo .

CORROSION SCIENCE, 2017, 118 :227-232

[3] Influence of Si, Ca and Ag addition on corrosion behaviour of new wrought Mg-Zn alloys [J].

Ben-Hamu, G. ;

Eliezer, D. ;

Shin, K. S. .

MATERIALS SCIENCE AND TECHNOLOGY, 2006, 22 (10) :1213-1218

[4]

Bonora P L, 2014, MAT SCI TECHNOL, V20, P29

[5] AC impedance spectroscopy study of the corrosion behavior of an AZ91 magnesium alloy in 0.1 M sodium sulfate solution [J].

Chen, Jian ;

Wang, Jianqiu ;

Han, Enhou ;

Dong, Junhua ;

Ke, Wei .

ELECTROCHIMICA ACTA, 2007, 52 (09) :3299-3309

[6] Microstructures and corrosion behaviors of squeeze-cast Mg-4Al-2RE and Mg-4Al-0.5RE-xCa (x=0.3, 0.8, and 1.5) alloys [J].

Chen, Yun ;

Wang, Zhiping ;

Xiong, Xinhong ;

Zhu, Chao ;

Yan, Pan .

MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION, 2018, 69 (09) :1300-1309

[7] Influence of lanthanum on the microstructure, mechanical property and corrosion resistance of magnesium alloy [J].

Fan, Yu ;

Wu, Guohua ;

Gao, Hongtao ;

Li, Guanqun ;

Zhai, Chunquan .

JOURNAL OF MATERIALS SCIENCE, 2006, 41 (17) :5409-5416

[8] The influence of zirconium additions on the corrosion of magnesium [J].

Gandel, D. S. ;

Easton, M. A. ;

Gibson, M. A. ;

Abbott, T. ;

Birbilis, N. .

CORROSION SCIENCE, 2014, 81 :27-35

[9] Effect of aluminium and calcium on the microstructure, texture, plastic deformation and related acoustic emission of extruded magnesium-manganese alloys [J].

Illkova, K. ;

Dobron, P. ;

Chmelik, F. ;

Kainer, K. U. ;

Balik, J. ;

Yi, S. ;

Letzig, D. ;

Bohlen, J. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2014, 617 :253-264

[10] The Effect of Cerium on Microstructures and Mechanical Properties of Mg-4Al-2Sn-1Ca Alloy [J].

Kim, Byeong Ho ;

Kimura, Hisamichi ;

Park, Yong Ho ;

Park, Ik Min .

MATERIALS TRANSACTIONS, 2010, 51 (07) :1346-1349

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