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<p>The microstructure of magnesium alloys presents anisotropy and stronger texture after synchronous rolling (SR) because of the continuous symmetric stress, which is one of the obstacles limiting the application of materials. Here the texture, grain size of Mg-13Gd-4Y-2Zn-0.5Zr rare earth magnesium alloy trained by asynchronous rolling (AR) process was investigated. The introduced additional shear deformation during AR can more significantly weaken the basal texture strength (SR: 17.565; AR: 14.100) and refine the average grain size (SR: 47.80&#xa0;μm; AR: 26.42&#xa0;μm), so as to improve the microstructure homogeneity. Besides, the shear deformation can disperse the grain orientation along RD (rolling direction) and weaken the basal texture strength, and thereby increasing the activation fraction of the basal slip during stretching along RD. These findings show that the texture control of Mg-13Gd-4Y-2Zn-0.5Zr alloy by AR is a promising subject, which can further broaden the application field of rare earth magnesium alloys.</p>

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Texture Weakening and Grain Refinement in Mg-13Gd-4Y-2Zn-0.5Zr Alloy via Asynchronous Rolling

  • 期刊论文

  • 发表日期：

    2025年10月23日

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  • Chaoran Guo,
  • Di Wang,
  • Hao Chen,
  • Shimin Xu,
  • Weijie Ren,
  • Jingna Sun,
  • Huagui Huang,
  • Shuyang Qin

摘要

The microstructure of magnesium alloys presents anisotropy and stronger texture after synchronous rolling (SR) because of the continuous symmetric stress, which is one of the obstacles limiting the application of materials. Here the texture, grain size of Mg-13Gd-4Y-2Zn-0.5Zr rare earth magnesium alloy trained by asynchronous rolling (AR) process was investigated. The introduced additional shear deformation during AR can more significantly weaken the basal texture strength (SR: 17.565; AR: 14.100) and refine the average grain size (SR: 47.80 μm; AR: 26.42 μm), so as to improve the microstructure homogeneity. Besides, the shear deformation can disperse the grain orientation along RD (rolling direction) and weaken the basal texture strength, and thereby increasing the activation fraction of the basal slip during stretching along RD. These findings show that the texture control of Mg-13Gd-4Y-2Zn-0.5Zr alloy by AR is a promising subject, which can further broaden the application field of rare earth magnesium alloys.