Journal of Materials Science

, Volume 43, Issue 22, pp 7148–7156 | Cite as

Deformation mechanism and texture and microstructure evolution during high-speed rolling of AZ31B Mg sheets

  • Hualong Li
  • Emilie Hsu
  • Jerzy SzpunarEmail author
  • Hiroshi Utsunomiya
  • Tetsuo Sakai


High-speed rolling of AZ31B was carried out under various preheating temperatures from RT to 350 °C. The evolution of texture, grain sizes, and dislocation density distribution (Kernel average misorientation distributions) in the mid-thickness and surface layer were investigated. Computer simulations of deformation textures were also performed in order to understand deformation mechanisms. It is concluded that the temperature increase due to the plastic and frictional working during high-speed rolling makes the <c+a> slip system more active and, hence, improves the ductility. The surface layer of the specimen has higher temperature and experiences severe shear stress; therefore the texture, microstructure, and dislocation density distribution are different from those of the mid-thickness of the specimen. Both mid-thickness and surface layer are dynamically recrystallized during the high-speed rolling.


Dislocation Density Slip System Pole Figure Dynamic Recrystallization Critical Resolve Shear Stress 


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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Hualong Li
    • 1
  • Emilie Hsu
    • 1
  • Jerzy Szpunar
    • 1
    Email author
  • Hiroshi Utsunomiya
    • 2
  • Tetsuo Sakai
    • 2
  1. 1.Department of Materials EngineeringMcGill UniversityMontrealCanada
  2. 2.Division of Materials and Manufacturing ScienceGraduate School of Engineering, Osaka UniversitySuitaJapan

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