Secondary phases in quasicrystal-reinforced Mg-3.5Zn-0.6Gd Mg alloy

被引：16
|
作者：
Huang, Hua [1 ,2 ,3 ]
Tian, Yuan [1 ]
Yuan, Guangyin [1 ,2 ]
Chen, Chunlin [3 ]
Wang, Zhongchang [3 ]
Ding, Wenjiang [1 ,2 ]
Inoue, Akihisa [4 ,5 ]
机构：
[1] Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloy Net Forming, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composite, Shanghai 200240, Peoples R China
[3] Tohoku Univ, Adv Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan
[4] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China
[5] Kings Abudulaziz Univ, Dept Phys, Jeddah 21589, Saudi Arabia
来源：
MATERIALS CHARACTERIZATION | 2015年 / 108卷
关键词：
Magnesium alloys; Quasictystal; Extrusion; Precipitation; Orientation; ZN-Y ALLOYS; MECHANICAL-PROPERTIES; ICOSAHEDRAL PHASE; HIGH-STRENGTH; DEFORMATION-BEHAVIOR; MAGNESIUM ALLOYS; LAVES PHASES; RE ALLOYS; GD ALLOY; MICROSTRUCTURE;
D O I：
10.1016/j.matchar.2015.09.005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The secondary phases in quasicrystal-reinforced Mg-Zn-Gd alloys are investigated by transmission electron microscopy. The orientation relationships between the dendritic I-phase and the Mg matrix are identified to be [1 1 (2) over bar 0](Mg)parallel to[2-fold](I-phase) and (0001)(Mg)parallel to(5-fold)(I-phase). We also find that the dendritic I-phase is brittle along 2-fold, 5-fold, and 3-fold atomic planes during hot extrusion. Moreover, new orientation relations [(1) over bar 101](Mg)parallel to[mirror 2-fold](I-phase) and (0 (1) over bar 1 1)(Mg)parallel to(5-fold)(I-phase) are found between nanoscale I-phase and Mg matrix. The findings have implications for our understanding of excellent mechanical properties of the I-phase-strengthened Mg alloys. (C) 2015 Elsevier Inc. All rights reserved.
引用
收藏
页码：132 / 136
页数：5
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