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Effect of minor Nd substitution for Y on microstructure and corrosion resistance of extruded Mg–Zn–Y alloy

  • Yuezhong Zhang , Xiaoyu Wang , Baosheng Liu , Kewei Zhang , Xudong Zhao and Daqing Fang
Published/Copyright: October 3, 2018
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 109 Issue 10

Abstract

The influence of minor Nd substitution on the microstructure and corrosion resistance of Mg–Zn–Y alloy were investigated. Results indicate that the partial substitution of Nd for Y can effectively refine grains but deteriorate the corrosion resistance of extruded Mg–Zn–Y alloy. The corrosion rates, measured by immersion tests in 3.5% NaCl solution at 25°C, are 12 and 19 mm · y−1 for the Mg-5.6Zn-1.4Y and Mg-5.6Zn-1.0Y-0.4Nd alloys, respectively. The negative effect of Nd is associated with enhanced microgalvanic corrosion resulting from grain refinement and higher area of second phase, as well as to a degraded protectiveness of the corrosion product layer.

Keywords: Magnesium alloy; Extrusion; Corrosion; Rare earth elements
*Correspondence address, Dr. Baosheng Liu and Dr. Daqing Fang, College of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, P.R. China, Tel.: +86-351-2161126, Fax: +86-351-2161126, E-mail: (Baosheng Liu) (Daqing Fang)

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Received: 2018-01-25
Accepted: 2018-03-12
Published Online: 2018-10-03
Published in Print: 2018-10-16

© 2018, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111683
Keywords for this article
Magnesium alloy; Extrusion; Corrosion; Rare earth elements

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Statistical analysis of micropore size distributions in Al–Si castings evaluated by X-ray computed tomography
  5. Effect of processing parameters on the microstructural and mechanical properties of aluminum–carbon nanotube composites produced by spark plasma sintering
  6. Synthesis of ZnO nanomaterials with different morphologies by hydrothermal method
  7. Dielectric studies of CCTO-based nanocomposite ceramic synthesized by a solid state route
  8. Effect of laser forming on mechanical properties of multiple-phase steels by using a thermal–microstructure–mechanical model
  9. Effect of temper rolling and subsequent annealing on texture development and magnetic permeability of semi-processed electrical steel with 2.3 wt.% Si
  10. Compressive behavior of double-layered functionally graded 316L stainless steel foam
  11. Microstructure and mechanical behavior of Mg–Y–Zn alloys with respect to varying content of LPSO phase
  12. Microstructural evolution of semi-solid A356 alloy during reheating
  13. Lewis–Br⊘nsted induction acidity in SBA-15 modified with Zr and P
  14. Short Communications
  15. Nanophase formation during the heat treatment of Al-13Si-5Cu-2Ni-1Mg alloy and the abnormal enhancement of its tensile properties
  16. Effect of minor Nd substitution for Y on microstructure and corrosion resistance of extruded Mg–Zn–Y alloy
  17. DGM News
  18. DGM News
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