Advertisement

China Foundry

, Volume 15, Issue 2, pp 132–138 | Cite as

Influence of Ca on mierostructure and corrosion resistance of Mg-14Li alloy

  • Tian-shun Dong
  • Xiao-bing Li
  • Bin-guo Fu
  • Guo-lu Li
  • Jin-hai Liu
Research & Development
  • 4 Downloads

Abstract

In order to improve the corrosion resistance of magnesium lithium alloy, Mg-14Li alloy with different content of Ca (0, 3, 5, 10wt.%) was prepared with a induction melting furnace. Electrochemical test and corrosion test were carried out in NaCI solution with different Cl- concentrations. The results indicate that the microstructure of the Mg-14Li alloy with Ca consists of dendritic β phase and eutectic structure (β+CaMg2). With the increase of Ca addition from 0, to 3, 5, 10wt.%, the corrosion resistance of the Mg-14Li alloy initially increases first and then decreases, and that of alloy with 3% Ca is the best. Therefore, the corrosion resistance of Mg-14Li alloy in NaCI solution can be effectively improved by adding proper amount of Ca. In addition, the concentration of Cl- was one of important factors affecting the corrosion resistance of the Mg-14Li alloy, and the influence of Ca was slighter than that of Cl-.

Keywords

magnesium lithium alloy Ca refine electrochemistry corrosion resistance 

Document Code

References

  1. [1]
    Jing Xiaoyan, Yuan Yi, Yu Fang, et al. Study on Corrosion Resistance Coating Formed on Magnesium-Lithium Alloy by Micro-Arc Oxidation. Rare Metal Materials and Engineering, 2009, 38(7): 1154–1157.Google Scholar
  2. [2]
    Zhang C, Huang X, Zhang M, et al. Electrochemical characterization of the corrosion of a Mg-Li Alloy. Materials Letters, 2008, 62(14): 2177–2180.CrossRefGoogle Scholar
  3. [3]
    Gyu Hyeon Park, Jeong Tae Kim, Hae Jin Park, et al. Development of lightweight Mg-Li-AI alloys with high specific strength. Journal of Alloys and Compounds, 2016,680:116–120.CrossRefGoogle Scholar
  4. [4]
    Zhuo Xiaojun, Peng Xiaodong, Chen Deshun, et al. Influence of Sr on microstructure and mechanical properties of Mg-Li-Zn alloy. Materials for Mechanical Engineering, 2014(9): 58–62. (In Chinese)Google Scholar
  5. [5]
    Jiang Bingchun, Wang Shuping, Liu Fangfang, et al. Research on Microstructure and Mechanical Properties of Mg-9Li-1X (AI, Zn, Sn) Two-Phase Magnesium Lithium Alloy. Foundry, 2016, 65(6): 508–611. (In Chinese)Google Scholar
  6. [6]
    Xu W, Birbilis N, Sha G, et al. A high-specific-strength and corrosion-resistant magnesium alloy. Nature Materials, 2015, 14(12): 1229–1236.CrossRefGoogle Scholar
  7. [7]
    Zhou Yuyue. Influence of Ca adding mode on Microstructure and mechanical properties of Mg-Li alloys. Dissertation, Taiyuan University of Technology, Taiyuan, 2016. (In Chinese)Google Scholar
  8. [8]
    Hao Hai, Yao Lei, Gu Songwei, et al. Effects of Ca and electromagnetic stirring on microstructures and mechanical properties of Mg-Li-AI alloys. The Chinese Journal of Nonferrous Metals, 2010,20(6): 1060–1068. (In Chinese)Google Scholar
  9. [9]
    Zhou Yuyue, Bian Liping, Chen Guang, et al. Influence of Ca Addition on Microstructural Evolution and Mechanical Properties of Near-eutectic Mg-Li Alloys by Copper-mold Suction Casting. Journal of Alloys & Compounds, 2016,664:85–91.CrossRefGoogle Scholar
  10. [10]
    Chandran R, Sakai T, Kamado S, et al. Semi-solid forming of Mg-Li-Al-Ca light metal alloys. Journal of Japanese Institute of Light Metals, 1998,48(1): 13–18.CrossRefGoogle Scholar
  11. [11]
    Song G S, Kral M V. Characterization of cast Mg-Li-Ca alloys. Materials Characterization, 2005,54:279–286.CrossRefGoogle Scholar
  12. [12]
    Zeng Rongchang, Lu Sun, Yu Fengzheng, et al. Corrosion and characterisation of dual phase Mg-Li-Ca alloy in Hank's solution: The influence of microstructural features. Corrosion Science, 2014,79:69–82.CrossRefGoogle Scholar
  13. [13]
    Zhang Milin, Elkin F M. Ultra light alloy of Mg-Li. Beijing: Science Press, 2010:302. (In Chinese)Google Scholar
  14. [14]
    Song Guangling. Corrosion and protection of magnesium alloys. Beijing: Chemical Industry Press, 2006:209. (In Chinese)Google Scholar
  15. [15]
    Meng Tianyu, Zhang Tao, Li Yue, et al. Corrosion behavior of Mg-Al and Mg-Li alloy sheet in NaCl solution. Journal of University of Science and Technology Liaoning, 2016, 39(6): 446–454. (In Chinese)Google Scholar
  16. [16]
    Wang Xinyin, Zhou Yaru, Zhang Jianqing, et al. Research Status of Hydrogen Evolution during Magnesium Alloy's Corrosion Process. Equipment Environmental Engineering, 2015(4): 129–136. (In Chinese)Google Scholar
  17. [17]
    Lukashev R V, Yakovleva N A, Klyamkin S N, et al. Effect of Mechanical Activation on the Reaction of Magnesium Hydride with Water. Russian Journal of inorganic Chemistry, 2008,53(3): 343–349.CrossRefGoogle Scholar
  18. [18]
    Yang Lihui, Jiang Quantong, Zheng Meng, et al. Corrosion behavior of Mg-8Li-3Zn-AI alloy in neutral 3.5% NaCl solution. Journal of Magnesium & Alloys, 2016,4(1): 22–26.CrossRefGoogle Scholar
  19. [19]
    Xu Hongyan, Diwu Jiangtao, Liu Xia, et al. Corrosion Behavior of ZK60 Magnesium Alloy in Sodium Halide Solutions. Journal of Chinese Society for Corrosion and Protection, 2015, 35(3): 245–250. (In Chinese)Google Scholar
  20. [20]
    Dong Tianshun, Liu Jinhai, Li Guolu, et al. Oxidation Resistance and Hydrogen Generation Characteristic of Light Mg-32Li-2AI-0.5Ca alloy. Rare Metal Materials and Engineering, 2013(s2): 321–325.Google Scholar

Copyright information

© Foundry Journal Agency and Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Tian-shun Dong
    • 1
  • Xiao-bing Li
    • 1
  • Bin-guo Fu
    • 1
  • Guo-lu Li
    • 1
  • Jin-hai Liu
    • 1
  1. 1.School of Material Science and EngineeringHebei University of TechnologyTianjinChina

Personalised recommendations