Microstructure and phase compositions of as-cast Mg-3.9Zn-0.6RE (Gd, Y) alloy with different Gd/Y ratios

被引：18
作者：
Yang, Yang [1 ]
Zhang, Kui [1 ]
Ma, Ming-Long [1 ]
Yuan, Jia-Wei [1 ]
机构：
[1] Gen Res Inst Nonferrous Met, State Key Lab Fabricat & Proc Nonferrous Met, Beijing 100012, Peoples R China
来源：
RARE METALS | 2015年 / 34卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Mg-Zn-RE alloy; Icosahedral quasicrystalline; Microstructure; Atomic ratio; MECHANICAL-PROPERTIES; ZN; EXTRUSION; NACL;
D O I：
10.1007/s12598-014-0444-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Mg-Zn-RE (Gd, Y) alloys with different Gd/Y atomic ratios were prepared by conventional casting, and the microstructure of the alloys was studied by multiple means. Icosahedral quasicrystal phases are observed in all alloys. The different Gd/Y atomic ratios affect the microstructures of the alloys irregularly. The alloy with more Gd has large dendritic structure and more complicated phase composition which are composed of I-phase lamellar eutectic, W-phase divorced eutectic, Mg-RE cuboid particles and Mg-Zn binary phases. Other two alloys show similar microstructures and phase compositions with very thin lamellar eutectics which distribute along the interdendritic region, and the lamellar eutectics are formed by I-phase and Mg. The element contents of the I-phases and Mg-RE phases are partially controlled by the Gd/Y atomic ratio.
引用
收藏
页码：160 / 163
页数：4
相关论文
共 19 条
  • [1] Texture and stretch formability of rolled Mg-Zn-RE(Y, Ce, and Gd) alloys at room temperature
    Cai, Zheng-Xu
    Jiang, Hai-Tao
    Tang, Di
    Ma, Zhao
    Kang, Qiang
    [J]. RARE METALS, 2013, 32 (05) : 441 - 447
  • [2] [郭永春 Guo Yongchun], 2014, [稀有金属, Chinese Journal of Rare Metals], V38, P603
  • [3] The effect of nanoquasicrystals on mechanical properties of as-extruded Mg-Zn-Gd alloy
    Huang, Hua
    Kato, Hidemi
    Chen, Chunlin
    Wang, Zhongchang
    Yuan, Guangyin
    [J]. MATERIALS LETTERS, 2012, 79 : 281 - 283
  • [4] The corrosion behaviors of Mg-7Gd-5Y-1Nd-0.5Zr alloy under (NH4)(2)SO4, NaCl and Ca(NO3)(2) salts spray condition
    Jiang, Quantong
    Zhang, Kui
    Li, Xinggang
    Li, Yongjun
    Ma, Minglong
    Shi, Guoliang
    Yuan, Jiawei
    [J]. JOURNAL OF MAGNESIUM AND ALLOYS, 2013, 1 (03) : 230 - 234
  • [5] [李尧 Li Yao], 2014, [稀有金属, Chinese Journal of Rare Metals], V38, P973
  • [6] Deformation behavior of Mg-Zn-Gd-based alloys reinforced with quasicrystal and Laves phases at elevated temperatures
    Liu, Yong
    Yuan, Guangyin
    Ding, Wenjiang
    Lu, Cheng
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 427 (1-2) : 160 - 165
  • [7] Stable icosahedral phase in Mg-Zn-Gd alloy
    Liu, Yong
    Yuan, Guangyin
    Lu, Chen
    Ding, Wenjiang
    [J]. SCRIPTA MATERIALIA, 2006, 55 (10) : 919 - 922
  • [8] ON THE STABLE QUASI-CRYSTALS ZN SLOWLY COOLED MG-ZN-Y ALLOYS
    LUO, ZP
    ZHANG, SQ
    TANG, YL
    ZHAO, DS
    [J]. SCRIPTA METALLURGICA ET MATERIALIA, 1995, 32 (09): : 1411 - 1416
  • [9] Thermodynamic modelling of the Y-Zn and Mg-Zn-Y systems
    Shao, G.
    Varsani, V.
    Fan, Z.
    [J]. CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, 2006, 30 (03): : 286 - 295
  • [10] Microstructure of ZM6 magnesium alloy with different Nd content
    Shi, Weng-Yong
    Ma, Yan
    [J]. RARE METALS, 2013, 32 (03) : 234 - 240
12