Effect of Al addition on the elevated temperature deformation behavior of Mg-Zn-Y alloy

被引：18

作者：

Kim, Do Hyung ^{[1
]}

Lee, Ju Yeon ^{[1
]}

Lim, Hyun Kyu ^{[1
]}

Kim, Won Tae ^{[2
]}

Kim, Do Hyang ^{[1
]}

机构：

[1] Yonsei Univ, Dept Met Engn, Ctr Noncrystalline Mat, Seoul 120749, South Korea

[2] Cheongju Univ, Div Appl Sci, Cheongju 360764, Chongbuk, South Korea

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 487卷 / 1-2期

关键词：

Mg-Zn-Y; superplastic; quasicrystal;

D O I：

10.1016/j.msea.2007.10.031

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of the addition of Al on the high temperature deformation behavior of wrought Mg-4Zn-0.8Y alloy has been investigated. The addition of Al significantly improves the high temperature formability, i.e. increases elongation from 260% to 370% under a strain rate of 1 x 10(-4) s(-1) at 300 degrees C. Strain rate sensitivity measured at different strain rates shows that the addition of Al induces the transition of high temperature deformation mechanism from dislocation creep mode to grain boundary sliding mode. Effect of alloying elements and microstructural evolution including the role of icosahedral-phase during deformation are discussed. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：481 / 487

页数：7

共 16 条

[1] Thermally stable quasicrystalline phase in a superplastic Mg-Zn-Y-Zr alloy [J].

Bae, D. H. ;

Kim, Y. ;

Kim, I. J. .

MATERIALS LETTERS, 2006, 60 (17-18) :2190-2193

[2] Grain size and temperature dependence of superplastic deformation in an Al-Mg alloy under isostructural condition [J].

Bae, DH ;

Ghosh, AK .

ACTA MATERIALIA, 2000, 48 (06) :1207-1224

[3] 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

[4] Comparative study of creep of the die-cast Mg-alloys AZ91, AS21, AS41, AM60 and AE42 [J].

Blum, W ;

Zhang, P ;

Watzinger, B ;

Von Grossmann, B ;

Haldenwanger, HG .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 319 :735-740

[5] Constitutive behavior of superplastic materials [J].

Chandra, N .

INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS, 2002, 37 (03) :461-484

[6]

Courtney TH., 2000, Mechanical behavior of materials, V2

[7]

Humphreys F.J., 2017, Recrystallization and Related Annealing Phenomena

[8] Precipitates in a Mg-Zn-Y alloy reinforced by an icosahedral quasicrystalline phase [J].

Kim, IJ ;

Bae, DH ;

Kim, DH .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 359 (1-2) :313-318

[9] Effects of Zn/Y ratio on microstructure and mechanical properties of Mg-Zn-Y alloys [J].

Lee, JY ;

Do, HK ;

Lim, HK ;

Kim, DH .

MATERIALS LETTERS, 2005, 59 (29-30) :3801-3805

[10] Creep-resistant magnesium alloys [J].

Mordike, BL .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 324 (1-2) :103-112

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