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    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/045/0158

    • Keywords

       

      Magnesium; threshold displacement energy; atomistic simulation; radiation damage.

    • Abstract

       

      Despite its potential use as a lightweight material, the effects of irradiation on magnesium (Mg) remain poorly understood. Specifically, the threshold displacement energy (TDE), which corresponds to the minimum energy required to displace an atom from the lattice position has not been explored so far. Here, using molecular simulations, we estimate the TDE of an Mg single crystal. We observe that the TDE is not significantly affected by the location of an atomin the lattice and the incident direction of energy or collision. We also demonstrate the formation of local defects, which are instantly annealed. Interestingly, the annealing process is facilitated by the temporary displacement of atoms from their lattice position into the interstitials, which in turn results in the creation of at least one stable Frenkel pair defect. Overall, this study provides insights into the response of Mg crystal to radiation, which is crucial for development of Mg-based structures for applications in aerospace and nuclear industries.

    • Author Affiliations

       

      TANU PITTIE1 GAUTAM KUNWAR1 SUMANTA DAS2 JAYANT JAIN3 KRISHNAN N M ANOOP1 4

      1. Department of Civil Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
      2. Department of Civil and Environmental Engineering, University of Rhode Island, Kingston 02881, USA
      3. Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
      4. Yardi School of Artificial Intelligence, Indian Institute of Technology Delhi, New Delhi 110016, India

    • Dates

       
      Published
      8 August 2022
      Manuscript received
      10 February 2022
      Accepted
      27 April 2022
      Final version published online
      8 August 2022

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