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    • Damage evolution in single crystal iron at high strain rate: A molecular dynamics study

      SUNIL RAWAT

      Research Article Volume 95 Published: 31 May 2021 Article ID 0093

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/095/0093

    • Keywords

       

      Void evolution; single crystals; extreme strain rate; molecular dynamics; iron

    • Abstract

       

      We simulate triaxial deformation of a single crystal iron at 10$^6$ s$^{−1}$ strain rate to investigate the void evolution dynamics in a single crystal iron. We find that the peak tensile pressure is very close to the spall strength of the single crystal iron. As strain rate decreases, the peak tensile pressure approaches the void nucleation threshold of the single crystal iron. The damage of the single crystal iron takes place due to nucleation, growth and coalescence of many voids and not due to the growth of a single void. The void growth rate is very high indicating rapid growth of the voids once nucleated.

    • Author Affiliations

       

      SUNIL RAWAT1

      1. Indian Institute of Technology Kharagpur, Kharagpur 721 302, India

    • Dates

       
      Published
      31 May 2021
      Manuscript received
      14 October 2020
      Manuscript revised
      4 December 2020
      Accepted
      19 February 2021
      Final version published online
      31 May 2021

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      Posted on July 25, 2019

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