Effects of phase composition on the mechanical properties and damping capacities of as-extruded Mg-Zn-Y-Zr alloys

被引：111

作者：

Wang, Jingfeng ^{[1
,2
]}

Gao, Shan ^{[1
,2
]}

Song, Pengfei ^{[1
,2
]}

Huang, Xuefei ^{[3
]}

Shi, Zhangzhi ^{[3
]}

Pan, Fusheng ^{[1
]}

机构：

[1] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China

[2] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China

[3] Tsinghua Univ, Dept Mat Sci & Engn, Adv Mat Lab, Beijing 100084, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 34期

基金：

中国国家自然科学基金;

关键词：

Magnesium alloy; Mechanical Property; Damping; Transmission electron microscope; Long period stacking ordered phase; QUASI-CRYSTALLINE PHASE; CUBIC W-PHASE; TEMPERATURE; BEHAVIOR; MICROSTRUCTURES; MORPHOLOGY;

D O I：

10.1016/j.jallcom.2011.06.017

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The present work mainly investigated the microstructures, mechanical properties, and damping capacities of as-extruded Mg-Zn-Y-Zr alloys with varied phase composition. Alloys of MgZn(2), W-phases (Mg(3)Y(2)Zn(3)), I-phases (Mg(3)YZn(6)), and X-phases (Mg(12)YZn) were obtained by adjusting the Zn/Y ratio (in wt%). The crystallographic structure of the X-phase [long period stacking ordered (LPSO) phase] and the crystallographic relationship between the W-phase and the Mg matrix were determined. The strengthening effects of the phase composition on the alloys exhibited the following trend: W + LPSO > LPSO>W + I > MgZn(2). Variations in the phase composition resulted in almost consistent variations in the damping capacities of the alloys compared with their mechanical properties. The LPSO structural phase could enhance the mechanical properties and simultaneously maintain the good damping capacity of the alloys. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：8567 / 8572

页数：6

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