Investigations on the tensile deformation of pure Mg and Mg–15Gd alloy by in-situ X-ray synchrotron radiation and visco-plastic self-consistent modeling

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  • Yuling Xu
  • Yuanding Huang
  • Yuye Wang
  • Weiming Gan
  • Shiwei Wang
  • Emad Maawad
  • Norbert Schell
  • Norbert Hort

In this study, the texture evolutions of two Mg materials during tension are explored. In-situ X-ray synchrotron and Visco-Plastic Self-Consistent (VPSC) modeling are employed to investigate the different deformation modes between pure Mg and Mg–15Gd (wt.%) alloy. These two materials with a strong extrusion texture show large different slip/twinning activity behaviors during tensile deformation. The basal 〈a〉 slip has the highest contribution to the initial stage of plastic deformation for pure Mg. During the subsequent plastic deformation, the prismatic slip is dominant due to the strong ED // 〈100〉 fiber texture. In contrast, the deformation behavior of Mg–15Gd alloy is more complex. Twinning and basal slip are dominant at the early stage of plastic deformation, but further deformation results in the increased activation of prismatic and pyramidal slips. In comparison to pure Mg, the ratios of the critical resolved shear stress (CRSS) between non-basal slip and basal slip of the Mg–15Gd alloy are much lower.

Original languageEnglish
JournalJournal of Magnesium and Alloys
Issue number2
Pages (from-to)607-613
Number of pages7
Publication statusPublished - 01.02.2023

Bibliographical note

The authors acknowledge the help and support of Mr. Günther Meister (MagIC, HZG) during casting. The authors thank Prof. Walter Reimers (FMW, TU Berlin) for offering help of extrusion processing. The present work was sponsored by the China Postdoctoral Science Foundation (Grant No. 2020M673156) and Shanghai Pujiang Program (Grant No. 20PJ1404900). We acknowledge DESY (Hamburg, Germany), a member of the Helmholtz Association HGF, for the provision of experimental facilities. Parts of this research were carried out at P07 beamline of HZG.

Publisher Copyright:
© 2021

    Research areas

  • In-situ investigation, Mechanical behavior, Mg alloy, Texture
  • Engineering