Effect of hot extrusion on microstructure and mechanical properties of quasicrystal-reinforced Mg-Zn-Yalloy

被引：0

作者：

郑明毅

乔晓光

徐世伟

甘为民

吴昆

S.Kamado

Y.Kojima

H.G.Brokmeier

机构：

[1] China

[2] D21502

[3] Department of Mechanical Engineering

[4] GKSS-Research Center Harbin 150001

[5] Geesthacht

[6] Germany

[7] Harbin Institute of Technology

[8] Institute of Materials Engineering

[9] Japan

[10] Nagaoka 940-2188

[11] Nagaoka University of Technology

[12] School of Materials Scienceand Engineering

来源：

Transactions of Nonferrous Metals Society of China | 2005年 / 04期

关键词：

magnesium alloys; quasicrystal; extrusion; microstructure; mechanical properties;

D O I：

暂无

中图分类号：

TG376.2 [热挤压];

学科分类号：

080201 ; 080503 ;

摘要：

The microstructure and mechanical properties of as-cast and as-extruded Mg-Zn-Y alloy （Mg-11%Zn-0.9%Y, mass fraction） containing Mg3YZn6 quasicrystal were studied. The eutectic icosahedral quasicrystal phase （I-phase） is broken and almost distributes along the extrusion direction, and fine I-phase with nano-size is precipitated during the extrusion. The α-Mg matrix grains are refined due to recrystallization occuring during the hot extrusion. Some {1012} twins are observed in the extruded ZW1101 alloy. And {0002}〈1010〉 fiber texture is formed in matrix alloys after hot extrusion. The extruded alloy exhibits high strength in combination with large elongation at room temperature. The strengthening mechanism of the as-extruded alloy was discussed.

引用

页码：715 / 721

页数：7

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