Microstructure and corrosion resistance of directionally solidified Mg-2 wt.% Zn alloy

被引：40
|
作者：
Jia, Hongmin [1 ]
Feng, Xiaohui [1 ]
Yang, Yuansheng [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
[2] Shandong Key Lab High Strength Lightweight Metall, Jinan 250014, Peoples R China
来源：
CORROSION SCIENCE | 2017年 / 120卷
关键词：
Directional solidification; Mg-2Zn alloy; Microstructure evolution; Corrosion resistance; MAGNESIUM ALLOY; AL ALLOYS; BEHAVIOR; MICROSEGREGATION; PHASES; CAST; AZ31;
D O I：
10.1016/j.corsci.2017.02.023
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure and corrosion resistance of directionally solidified Mg-2 wt.% Zn alloy with different growth rates were investigated. Optical microscopy observations showed that the microstructure of directionally solidified Mg-2Zn alloy transformed from coarse cellular to fine cellular, undeveloped dendritic and finally dendritic structures as the growth rate increased from 20 mu m/s to 60 mu m/s, 120 mu m/s and 200 mu m/s, respectively. The results of electrochemical measurement and immersion test in 0.9 wt.% NaCl solution revealed that the corrosion resistance of directionally solidified Mg-2Zn alloy strongly depends on the microstructure. The samples with fine cellular structure have the highest corrosion resistance, which mainly due to the reduction of susceptible grain boundaries and homogenous distribution of Zn element. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：75 / 81
页数：7
相关论文
共 50 条
  • [21] Microstructure and Creep Resistance of Mg-(8-12 Wt.%) Zn-(2-6 Wt.%) Al Alloys
    Wan, Xiao Feng
    Ni, Hong Jun
    Huang, Ming Yu
    MANUFACTURING ENGINEERING AND AUTOMATION II, PTS 1-3, 2012, 591-593 : 1034 - 1037
  • [22] Effect of Micro-alloying and Microstructure on the Corrosion Behavior of As-Cast Mg-6.2 wt.% Zn Alloy
    Mandal, Monalisa
    Mondal, K.
    JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2020, 29 (10) : 6691 - 6700
  • [23] Effect of Micro-alloying and Microstructure on the Corrosion Behavior of As-Cast Mg-6.2 wt.% Zn Alloy
    Monalisa Mandal
    K. Mondal
    Journal of Materials Engineering and Performance, 2020, 29 : 6691 - 6700
  • [24] The microstructure of a Mg-10 wt.%Al alloy
    Braszczynska, KN
    ZEITSCHRIFT FUR METALLKUNDE, 2002, 93 (08): : 845 - 850
  • [25] Influence of Thermal Parameters, Microstructure, and Morphology of Si on Machinability of an Al-7.0 wt.% Si Alloy Directionally Solidified
    Silva, Cassio A. P.
    Leal, Layo R. M.
    Guimaraes, Emanuelle C.
    Junior, Paulo M.
    Moreira, Antonio L.
    Rocha, Otavio L.
    Silva, Adrina P.
    ADVANCES IN MATERIALS SCIENCE AND ENGINEERING, 2018, 2018
  • [26] Microstructure and Corrosion Resistance of Zn-Mg Alloy Coatings
    Hao, Xiaodong
    Yue, Chongfeng
    Liu, Qiuyuan
    Jiang, Sheming
    Zhang, Qifu
    Bai, Yanan
    Li, Lingjun
    2016 3RD INTERNATIONAL CONFERENCE ON SMART MATERIALS AND NANOTECHNOLOGY IN ENGINEERING (SMNE 2016), 2016, : 111 - 115
  • [27] Enhancement of corrosion resistance of Mg-9 wt.% Al-1 wt.% Zn alloy by a calcite (CaCO3) conversion hard coating
    Yu, B. L.
    Pan, X. L.
    Uan, J. Y.
    CORROSION SCIENCE, 2010, 52 (05) : 1874 - 1878
  • [28] Effect of 0.45 wt.% Nd Addition on the Corrosion Resistance of Extruded Mg-6Al-3Sn-2Zn Alloy
    Lv, Bin-Jiang
    Gao, Fu-Hao
    Lv, Jun-Jiang
    Peng, Jian
    JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2024, 33 (16) : 8262 - 8273
  • [29] Anisotropic mechanical and corrosion properties of directionally solidified Mg-3Zn-0.2Ca alloy
    Zhang, Yi
    Feng, Xiaohui
    Huang, Qiuyan
    Li, Yingju
    Yang, Yuansheng
    JOURNAL OF ALLOYS AND COMPOUNDS, 2022, 895
  • [30] Analysis on phase selection and microstructure evolution in directionally solidified Zn-Al-Mg-Ce alloy
    Ji-peng Li
    De-gao Qiao
    Shi-wen Dong
    Peng Peng
    Xian-tao Yan
    Xu-dong Zhang
    China Foundry, 2023, 20 : 347 - 355
12345