Effects of calcium addition on as-cast microstructure and mechanical properties of Mg-5Zn-5Sn alloy

被引：23

作者：

Yang Ming-bo ^{[1
,2
]}

Cheng Liang ^{[1
]}

Pan Fu-sheng ^{[2
]}

机构：

[1] Chongqing Univ Technol, Mat Sci & Engn Coll, Chongqing 400050, Peoples R China

[2] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400030, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2010年 / 20卷 / 05期

基金：

中国国家自然科学基金;

关键词：

magnesium alloy; Mg-5Zn-5Sn alloy; microstructure and properties; Ca addition; AGE-HARDENING RESPONSE; PHASE-FORMATION; SN; ZN; SOLIDIFICATION; TEM; SB;

D O I：

10.1016/S1003-6326(09)60212-0

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The effects of Ca addition on the as-cast microstructure and mechanical properties of the Mg-5Zn-5Sn (mass fraction, %) alloy were investigated. The results indicate that an addition of 0.5%-1.5% (mass fraction) Ca to the Mg-5Zn-5Sn alloy not only refines the as-cast microstructure of the alloy but also causes the formation of the primary and/or eutectic CaMgSn phases with high thermal stability; an increase in Ca amount from 0.5% to 1.5% (mass fraction) increases the amount and size of the CaMgSn phase. In addition, Ca addition to the Mg-5Zn-5Sn alloy improves not only the tensile properties at room temperature and 150 degrees C but also the creep properties. Among the Ca-containing Mg-5Zn-5Sn alloys, the one added 0.5% (mass fraction) Ca obtains the optimum ultimate tensile strength and elongation at room temperature and 150 degrees C, however, the alloy added 1.5% (mass fraction) Ca exhibits the optimum yield strength and creep properties.

引用

页码：769 / 775

页数：7

共 18 条

[1] Phase formation in Mg-Sn-Zn alloys - thermodynamic calculations vs experimental verification [J].

Bamberger, M. .

JOURNAL OF MATERIALS SCIENCE, 2006, 41 (10) :2821-2829

[2] The role of Si and Ca on new wrought Mg-Zn-Mn based alloy [J].

Ben-Hamu, G. ;

Eliezer, D. ;

Shin, K. S. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 447 (1-2) :35-43

[3]

COHEN S, 2004, MAGNESIUM, P24

[4] High temperature phase stabilized microstructure in Mg-Zn-Sn alloys with Y and Sb additions [J].

Gorny, Anton ;

Bamberger, Menahem ;

Katsman, Alexander .

JOURNAL OF MATERIALS SCIENCE, 2007, 42 (24) :10014-10022

[5] The Effect of Microstructure Evolution on the Elevated Temperature Mechanical Properties in Mg-Sn-Ca System [J].

Kim, Do Hyung ;

Lee, Ju Youn ;

Lim, Hyun Kyu ;

Kyeong, Joon Seok ;

Kim, Won Tae ;

Kim, Do Hyang .

MATERIALS TRANSACTIONS, 2008, 49 (10) :2405-2413

[6] Phase equilibria, thermodynamics and solidification microstructures of Mg-Sn-Ca alloys, Part 2: Prediction of phase formation in Mg-rich Mg-Sn-Ca cast alloys [J].

Kozlov, A. ;

Ohno, M. ;

Abu Leil, T. ;

Hort, N. ;

Kainer, K. U. ;

Schmid-Fetzer, R. .

INTERMETALLICS, 2008, 16 (02) :316-321

[7] Phase equilibria, thermodynamics and solidification microstructures of Mg-Sn-Ca alloys, Part 1: Experimental investigation and thermodynamic modeling of the ternary Mg-Sn-Ca system [J].

Kozov, A. ;

Ohno, M. ;

Arroyave, R. ;

Liu, Z. K. ;

Schmid-Fetzer, R. .

INTERMETALLICS, 2008, 16 (02) :299-315

[8] Solidification, solution treatment and age hardening of a Mg-1.6 wt.% Ca-3.2 wt.% Zn alloy [J].

Levi, G ;

Avraham, S ;

Zilberov, A ;

Bamberger, M .

ACTA MATERIALIA, 2006, 54 (02) :523-530

[9] Effects and mechanism of Ca on refinement of AZ91D alloy [J].

Li, Shuang-Shou ;

Tang, Bin ;

Zeng, Da-Ben .

JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 437 (1-2) :317-321

[10] An enhanced age hardening response in Mg-Sn based alloys containing Zn [J].

Mendis, C. L. ;

Bettles, C. J. ;

Gibson, M. A. ;

Hutchinson, C. R. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 435 :163-171

← 1 2 →