Effect of Zn addition on microstructure and mechanical properties of as-cast Mg-2Er alloy

被引：8

作者：

Wang, Qing-feng ^{[1
]}

Du, Wen-bo ^{[1
]}

Liu, Ke ^{[1
]}

Wang, Zhao-hui ^{[1
]}

Li, Shu-bo ^{[1
]}

机构：

[1] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2014年 / 24卷 / 12期

关键词：

Mg-Zn-Er alloy; secondary phase; microstructure; mechanical properties; Y-ZR ALLOYS; QUASI-CRYSTALLINE; MAGNESIUM ALLOY; MG; EXTRUSION;

D O I：

10.1016/S1003-6326(14)63534-2

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The effect of Zn addition on microstructure and mechanical properties of the Mg-2Er alloy was investigated by X-ray diffraction (XRD) and scanning electron microscope (SEM). The results show that the alloys with 1% and 2% Zn (mass fraction) are composed of the W-phase and the alpha-Mg matrix. Meanwhile, the addition of 4%-10% Zn results in the formation of the I-phase, the W-phase and the alpha-Mg matrix. When the addition of Zn reaches 12%, the W-phase disappears and the phase constituents of the alloys mainly include the I-phase and the Mg4Zn7 phase besides the a-Mg solid solution. The alloy containing 6% Zn has better mechanical properties, of which the ultimate tensile strength (UTS) and the yield tensile strength (YTS) are about 224 MPa and 134 MPa, respectively, companying an elongation of 10.4%.

引用

页码：3792 / 3796

页数：5

共 16 条

[1]

[Anonymous], 2003, Magnesium alloys containing rare earth metals: structure and properties

[2] Deformation behavior of Mg-Zn-Y alloys reinforced by icosahedral quasicrystalline particles [J].

Bae, DH ;

Kim, SH ;

Kim, DH ;

Kim, WT .

ACTA MATERIALIA, 2002, 50 (09) :2343-2356

[3] Experimental and calculated phases in two as-cast and annealed Mg-Zn-Y alloys [J].

Farzadfar, S. A. ;

Sanjari, M. ;

Jung, I. -H. ;

Essadiqi, E. ;

Yue, S. .

MATERIALS CHARACTERIZATION, 2012, 63 :9-16

[4] Microstructure and strengthening mechanism of high strength Mg-10Gd-2Y-0.5Zr alloy [J].

He, S. M. ;

Zeng, X. Q. ;

Peng, L. M. ;

Gao, X. ;

Nie, J. F. ;

Ding, W. J. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 427 (1-2) :316-323

[5] Microstructure and mechanical properties of extruded Mg-6Zn-xEr alloys [J].

Liu, Ke ;

Wang, Qing-feng ;

Du, Wen-bo ;

Wang, Zhao-hui ;

Li, Shu-bo .

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2013, 23 (10) :2863-2873

[6] QUASI-CRYSTALLINE AND CRYSTALLINE PRECIPITATION DURING ISOTHERMAL TEMPERING IN A 12CR-9NI-4MO MARAGING STAINLESS-STEEL [J].

LIU, P ;

STIGENBERG, AH ;

NILSSON, JO .

ACTA METALLURGICA ET MATERIALIA, 1995, 43 (07) :2881-2890

[7]

LUO AA, 2010, DEV HIGH DUCTILITY M, P313

[8] Current and future use of magnesium in the automobile industry [J].

Schumann, S ;

Friedrich, H .

MAGNESIUM ALLOYS 2003, PTS 1 AND 2, 2003, 419-4 :51-56

[9] Structural aspects of high performance Mg alloys design [J].

Smola, B ;

Stulíková, I ;

von Buch, F ;

Mordike, BL .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 324 (1-2) :113-117

[10]

Wang J, 2012, T NONFERR METAL SOC, V22, P1549, DOI [10.1016/S1003-6326(11)61354-X, 10.1016/S1003-6326(11)61354-x]

← 1 2 →