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Acta Metallurgica Sinica (English Letters)

, Volume 32, Issue 2, pp 218–226 | Cite as

Corrosion Resistance of AZ91 Mg Alloy Modified by High-Current Pulsed Electron Beam

  • Peng-Peng Wu
  • Kun-Kun DengEmail author
  • Kai-Bo Nie
  • Zhong-Zhong Zhang
Article
  • 54 Downloads

Abstract

The high-current pulsed electron beam (HCPEB) treatment with current density 6 J/cm2 was applied on AZ91 Mg alloy to improve its corrosion resistance. Results showed that the net-like Mg17Al12 disappeared on the surface of AZ91 Mg alloy after irradiation by HCPEB, which was instead of supersaturated Al element on the surface. Nevertheless, the application of HCPEB also led to the formation of crater-like and groove-like structures as well as micro-cracks on the surface of AZ91 Mg alloy. After HCPEB treatment by 3, 5 and 10 pulses, the AZ91 Mg alloy exhibited better corrosion resistance. However, the increasing amount of micro-cracks reduced the anti-corrosive properties of AZ91 Mg alloy as the pulse increased to 20 and 30.

Keywords

High-current pulsed electron beam (HCPEB) Corrosion resistance Electrochemical impedance spectroscopy (EIS) AZ91 Mg alloy Microstructure 

Notes

Acknowledgements

The authors gratefully acknowledge the finacial support from the National Natural Science Foundation of China (Nos. 51771128 and 51771129), the Projects of International Cooperation in Shanxi (No. 201703D421039) and the Natural Science Foundation of Shanxi (No. 201601D011034). The authors thank Dr. F.J. Xu and Dr. G.Z. Tang for experimental assistance and useful discussions.

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Copyright information

© The Chinese Society for Metals (CSM) and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Peng-Peng Wu
    • 1
  • Kun-Kun Deng
    • 1
    Email author
  • Kai-Bo Nie
    • 1
  • Zhong-Zhong Zhang
    • 1
  1. 1.Shanxi Key Laboratory of Advanced Magnesium-Based Materials, College of Materials Science and EngineeringTaiyuan University of TechnologyTaiyuanChina

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