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Investigations on microstructure evolution of TA1 titanium alloy subjected to electromagnetic impact loading

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Abstract

In this work, the adiabatic shear band of TA1 titanium alloy subjected to electromagnetic impact loading was investigated. The formation of adiabatic shear band and microstructure evolution within it were revealed by microstructure characterizations. Deformation results showed an adiabatic shear band with the width of 10 μm located in shear deformation zone, and most deformations mainly concentrated in the narrow band. The compressive instability and the hardness difference contributed to the formation of adiabatic shear band. Severe shear deformations led to high location density within the adiabatic shear band. A large amount of dislocations distributed in the form of dislocation cells and random dislocations. The rotational dynamic recrystallization mechanism caused that many dynamic recrystallization grains with the size of 100–200 nm were found inside the adiabatic shear band. Adiabatic temperature rise and distortion energies stored by high dislocation densities provided sub-grain rotations with the driving forces.

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Authors and Affiliations

  1. College of Automotive and Mechanical Engineering, Changsha University of Science and Technology, 960, 2nd Section, Wanjiali South RD, Changsha, Hunan, 410004, P.R. China

    Xu Zhang, Lin Hu & Hequan Wu

  2. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, 410082, China

    Congcong Zhu

  3. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China

    Chunfeng Li

Authors
  1. Xu Zhang
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  2. Congcong Zhu
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  3. Lin Hu
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  4. Hequan Wu
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  5. Chunfeng Li
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Correspondence to Hequan Wu.

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Zhang, X., Zhu, C., Hu, L. et al. Investigations on microstructure evolution of TA1 titanium alloy subjected to electromagnetic impact loading. Archiv.Civ.Mech.Eng 19, 639–647 (2019). https://doi.org/10.1016/j.acme.2019.01.002

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  • DOI: https://doi.org/10.1016/j.acme.2019.01.002

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