Effects of Zn on the microstructure, mechanical properties, and damping capacity of Mg-Zn-Y-Zr alloys

被引：62

作者：

Wang, Jingfeng ^{[1
,2
]}

Song, Pengfei ^{[1
,2
]}

Gao, Shan ^{[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, Adv Mat Lab, Dept Mat Sci & Engn, Beijing 100084, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 18期

基金：

中国国家自然科学基金;

关键词：

Magnesium alloys; Microstructure; Mechanical property; Damping capacity; Long period stacking ordered (LPSO) phase; Granato-Lucke theory; PHASE;

D O I：

10.1016/j.msea.2011.04.002

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The influences of Zn on the microstructure, mechanical properties, and damping capacity of as-extruded (Mg-5%Y-0.6%Zr)(1-x)Zn-x (x = 2%, 4%, 6%, mass fraction) alloys were investigated by optical microscopy, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, tensile testing, and dynamic mechanical analysis (DMA). The phase composition and microstructure of the alloys displayed evident variations with changes in Zn content. When the mass fraction of Zn changed from 2% to 6%, the phases mainly consisted of a long period stacking ordered (LPSO) X-phase (Mg12YZn) and a W-phase (Mg3Y2Zn3). Comparison of the mechanical properties and damping capacities of the different phases showed that the X-phase benefits the mechanical properties of the alloy without drastic impairment to their damping capacities. The damping capacities are discussed in terms of the Granato-Lucke theory and G-L plots. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：5914 / 5920

页数：7

共 24 条

[1] Long-period ordered structure in a high-strength nanocrystalline Mg-1 at% Zn-2 at% Y alloy studied by atomic-resolution Z-contrast STEM
Abe, E
Kawamura, Y
Hayashi, K
Inoue, A
[J]. ACTA MATERIALIA, 2002, 50 (15) : 3845 - 3857
[2] Avedesian MM., 1999, ASM Specialty Handbook: Magnesium and Magnesium Alloys
[3] Thermally stable quasicrystalline phase in a superplastic Mg-Zn-Y-Zr alloy
Bae, D. H.
Kim, Y.
Kim, I. J.
[J]. MATERIALS LETTERS, 2006, 60 (17-18) : 2190 - 2193
[4] Novel equilibrium two phase Mg alloy with the long-period ordered structure
Chino, Y
Mabuchi, M
Hagiwara, S
Iwasaki, H
Yamamoto, A
Tsubakino, H
[J]. SCRIPTA MATERIALIA, 2004, 51 (07) : 711 - 714
[5] DUBOIS JM, 1997, P 6 INT C QUAS WORLD
[6] EFFENBERG G, 1999, TERNARY ALLOYS, V16
[7] Effect of stacking fault probability and ε martensite on damping capacity of Fe-16%Mn alloy
Girish, B. M.
Satish, B. M.
Mahesh, K.
[J]. MATERIALS & DESIGN, 2010, 31 (04): : 2163 - 2166
[8] THEORY OF MECHANICAL DAMPING DUE TO DISLOCATIONS
GRANATO, A
LUCKE, K
[J]. JOURNAL OF APPLIED PHYSICS, 1956, 27 (06) : 583 - 593
[9] APPLICATION OF DISLOCATION THEORY TO INTERNAL FRICTION PHENOMENA AT HIGH FREQUENCIES
GRANATO, A
LUCKE, K
[J]. JOURNAL OF APPLIED PHYSICS, 1956, 27 (07) : 789 - 805
[10] Plastic deformation behavior of Mg12YZn with 18R long-period stacking ordered structure
Hagihara, K.
Yokotani, N.
Umakoshi, Y.
[J]. INTERMETALLICS, 2010, 18 (02) : 267 - 276

← 1 2 3 →