Precipitation hardening in Mg-Ca-Zn alloys

被引：84

作者：

Bamberger, M ^{[1
]}

Levi, G

Sande, JBV

机构：

[1] Technion Israel Inst Technol, Dept Mat Engn, IL-32000 Haifa, Israel

[2] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2006年 / 37A卷 / 02期

关键词：

Material Transaction; CaMg; Scanning Transmission Electron Microscopy Analysis; Alloy CaMg; Volume Fraction Ratio;

D O I：

10.1007/s11661-006-0019-9

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

Based on thermodynamic calculations, four alloys in the system Mg-Ca-Zn produced by gravity die casting were solution treated and aged at 175 C for different times. The scanning electron microscopy and X-ray diffraction analyses of the solutionized alloys were in good agreement with the thermodynamic calculations. In these Mg-Ca-Zn alloys, the hardness increases with aging time up to 8 hours followed by typical overaging, during which the hardness decreases. According to the calculations and scanning transmission electron microscopy analyses, the change in the hardness can be correlated to the precipitation of Ca2Mg6Zn3.

引用

页码：481 / 487

页数：7

共 15 条

[1]

A computational thermodynamic model of the Ca-Mg-Zn system [J].

Brubaker, CO ;

Liu, ZK .

JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 370 (1-2) :114-122

[2]

Gröbner J, 2003, Z METALLKD, V94, P976

[3]

Experimental study of ternary Ca-Mg-Si phase equilibria and thermodynamic assessment of Ca-Si and Ca-Mg-Si systems [J].

Gröbner, J ;

Chumak, I ;

Schmid-Fetzer, R .

INTERMETALLICS, 2003, 11 (10) :1065-1074

[4]

Horie T, 2000, MAGNESIUM TECHNOLOGY 2000, P261

[5]

Precipitate crystal structure determination in melt spun Mg-1.5wt%Ca-6wt%Zn alloy [J].

Jardim, PM ;

Solórzano, G ;

Vander Sande, JB .

MICROSCOPY AND MICROANALYSIS, 2002, 8 (06) :487-496

[6]

Second phase formation in melt-spun Mg-Ca-Zn alloys [J].

Jardim, PM ;

Solórzano, G ;

Vander Sande, JB .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 381 (1-2) :196-205

[7]

A ternary phase observed in rapidly solidified Mg-Ca-Zn alloys [J].

Larionova, TV ;

Park, WW ;

You, BS .

SCRIPTA MATERIALIA, 2001, 45 (01) :7-12

[8]

A thermodynamic description of the Al-Mg-Zn system [J].

Liang, H ;

Chen, SL ;

Chang, YA .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1997, 28 (09) :1725-1734

[9]

Precipitation hardening of Mg-Ca(-Zn) alloys [J].

Nie, JF ;

Muddle, BC .

SCRIPTA MATERIALIA, 1997, 37 (10) :1475-1481

[10]

Ozturk K, 2003, MAGNESIUM TECHNOLOGY 2003, P195

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