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Coexistence of multi-deformation modes in beta Ti alloys with improved yielding strength and ductility

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  • معلومة اضافية
    • بيانات النشر:
      EDP Sciences
    • الموضوع:
      2021
    • Collection:
      DSpace@MIT (Massachusetts Institute of Technology)
    • نبذة مختصرة :
      By suppressing SIM (stress induced martensitic) phase transformations, a strong and ductile beta TWIP (twinning induced plasticity) Ti-Mo based alloy was achieved, thanking to the coexistence of mechanical twinning ({112}<111> mode and {332} <113> mode) and dislocation glide. The alloy displayed extra high yielding stress, stable strain-hardening rate and adequate ductility. In-situ traction/EBSD technique and TEM characterizations were employed to investigate the plastic deformation mechanism. The dislocation slipping was mediated by bimodal twinning mechanism, composed by high density nano-scale {112} twinning in micro {332} twinning grid. The study aims to exploit novel design strategy for strengthening ductile TWIP Ti alloys, attributed to multimodal twinning effects.
    • File Description:
      application/pdf
    • Relation:
      MATEC Web of Conferences; https://hdl.handle.net/1721.1/133222
    • الدخول الالكتروني :
      https://hdl.handle.net/1721.1/133222
    • Rights:
      Creative Commons Attribution 4.0 International license ; https://creativecommons.org/licenses/by/4.0/
    • الرقم المعرف:
      edsbas.F8439F71