Improved corrosion resistant and strength of a magnesium alloy using multi-directional forging (MDF)

  • Ahmad Bahmani
  • Srinivasan Arthanari
  • Kwang Seon ShinEmail author


Extruded Mg alloy (ZAXM4211) was subjected to multi-directional forging (MDF) at different temperatures from 180 to 300 °C. Microstructure was analyzed using optical microscope (OM), scanning electron microscope (SEM), electron backscattered diffraction (EBSD), and X-ray diffraction (XRD) studies. Tensile and compression properties were evaluated and corrosion behavior was examined using electrochemical and immersion corrosion tests. It was found that the increase in MDF temperature decreased the yield strength due to an increase in the grain size. Furthermore, the corrosion rate was decreased as the MDF temperature was increased could be due to the dissolution of the second phases, which was further substantiated by the image analysis and scanning Kelvin probe force microscope (SKPFM) studies. The relationship between yield strength and grain size and furthermore, corrosion rate and second phases were quantitatively analyzed.


Multi-directional forging Extrusion Magnesium alloy Yield strength Corrosion Secondary phase 


Funding information

This work was supported by the National Research Foundation grant (2015R1A2A1A01006795) funded by the Ministry of Science and ICT of Korea through the Research Institute of Advanced Materials.

Supplementary material

170_2019_4176_MOESM1_ESM.png (6.1 mb)
Fig. S1 (a) The average misorientation of the (a) extruded and (b) MDF300 alloys. The left images are kernel average misorientation and right ones are local average misorientation (LAM). (PNG 6297 kb)


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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  1. 1.Magnesium Technology Innovation Center, School of Materials Science and EngineeringSeoul National UniversitySeoulKorea
  2. 2.School of Materials and Metallurgical Engineering, College of EngineeringTehran UniversityTehranIran

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