Effects of Nd on microstructure and mechanical properties of Mg-Al-Ca alloy

被引：12

作者：

Chen, Y. ^{[1
,2
]}

Hao, L. ^{[1
]}

Ruiyu, Y. ^{[1
]}

Liu, G. ^{[1
]}

Xia, T. ^{[1
]}

机构：

[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China

[2] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2014年 / 30卷 / 04期

关键词：

Magnesium alloy; Microstructure; Nd; High temperature properties; BEHAVIOR;

D O I：

10.1179/1743284713Y.0000000248

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Effects of Nd additions (0-4 wt-%) on microstructures and properties of Mg-Al-Ca alloy at room temperature and 150 degrees C have been investigated. The results showed that Mg-6Al-2Ca alloy consisted of alpha-Mg matrix, Mg17Al12, Mg-Ca and Al-Ca phases. The amount of Al-Nd phase increases with the increasing of Nd content while that of Mg17Al12 decreases. On the other hand, Nd refines the microstructure of as cast and extruded alloys. The ultimate strength and yield strength of experimental alloys are improved with the addition of Nd, and the largest values are 319 and 210 MPa respectively at room temperature. When the temperature was elevated to 150 degrees C, with the increasing of Nd, ultimate strength and yield strength of experimental alloys are first increased and subsequently decreased. Mg-6Al-2Ca-xNd alloy has the best ultimate strength and yield strength at 150 degrees C, which reaches 265 and 179 MPa respectively when the content of Nd reached 3%.

引用

页码：495 / 500

页数：6

共 15 条

[1] Microstructure and tensile creep behavior of Mg-4Al based magnesium alloys with alkaline-earth elements Sr and Ca additions [J].

Bai, J ;

Sun, YS ;

Xun, S ;

Xue, F ;

Zhu, TB .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 419 (1-2) :181-188

[2]

Bai X., 2009, DEV ALKALINE EARTH H

[3]

Fu X., 2003, SCI DESIGN ENG MAT, P632

[4] The microstructure and mechanical properties of permanent-mould cast Mg-5 wt%Sn-(0-2.6) wt%Di alloys [J].

Liu, Hongmei ;

Chen, Yungui ;

Tang, Yongbai ;

Huang, Deming ;

Niu, Gao .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 437 (02) :348-355

[5]

Lu C., 2005, CASTING, V54, P112

[6] Effects of rare earth elements and Ca additions on high temperature mechanical properties of AZ31 magnesium alloy processed by ECAP [J].

Masoudpanah, S. M. ;

Mahmudi, R. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (16-17) :3685-3689

[7]

[彭建 PENG Jian], 2011, [材料工程, Journal of Materials Engineering], P17

[8] Evolution of the microstructure and hardness of a rapidly solidified/melt-spun AZ91 alloy upon aging at different temperatures [J].

Wang, Baishu ;

Liu, Yongbing ;

An, Jian ;

Li, Rongguang ;

Su, Zhenquo ;

Su, Guihua ;

Lu, You ;

Cao, Zhanyi .

MATERIALS CHARACTERIZATION, 2009, 60 (04) :316-321

[9] Effect of yttrium and cerium addition on microstructure and mechanical properties of AM50 magnesium alloy [J].

Wang Mingxing ;

Zhou Hong ;

Wang Lin .

JOURNAL OF RARE EARTHS, 2007, 25 (02) :233-237

[10] The solidification behaviour of Mg-Al-rare earth alloys [J].

Wei, LY ;

Dunlop, GL .

JOURNAL OF ALLOYS AND COMPOUNDS, 1996, 232 (1-2) :264-268

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