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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/045/0233

    • Keywords

       

      HPXRD; bulk modulus; neutron irradiation.

    • Abstract

       

      This study reports the pressure effect on structural stability of neutron irradiated ferroboron systems. Ferroboron, a mixture of boron and iron, has been found to have three phases, i.e., FeB, Fe$_2$B and Fe$_3$B. Studies have been conducted on single-phase Fe$_2$B and ferroboron. Fe$_2$B adopts tetragonal structure at ambient and undergoes structural transition to orthorombhic phase at 6 GPa. Further, Fe2B is irradiated with neutrons with a fluence of ${\sim}$10$^{17}$ n cm$^{–2}$ and yields bulk modulus of 254 GPa, which is 16% enhancement as compared to unirradiated sample. The defects are estimated by the use of SRIM code. Total displacement per atom (dpa) in Fe$_2$B for the irradiation fluence is found to be 5.53${\times}$10$^{-5}$. The study also shows that phase transition seen in pristine Fe$_2$B is inhibited upon neutron irradiation under pressure up to 24 GPa. Similar result was obtained on ferroboron mixture, irradiated with a neutron fluence of 8.18${\times}$10$^{21}$ n cm$^{-2}$ with dpa of 2.8. The irradiated sample is found to be stable up to 16 GPa.

    • Author Affiliations

       

      ANAND KUMAR1 UTTYIOARNAB SAHA2 E RADHA3 K DEVAN2 N R SANJAY KUMAR1 C N VENKITESWARAN4 R DIVAKAR4 N V CHANDRA SHEKAR1

      1. Materials Science Group, Indira Gandhi Centre for Atomic Research, HBNI, Kalpakkam 603102, India
      2. Reactor Design and Technology Group, Indira Gandhi Centre for Atomic Research, HBNI, Kalpakkam 603102, India
      3. Reactor Facilities Group, Indira Gandhi Centre for Atomic Research, HBNI, Kalpakkam 603102, India
      4. Materials and Metallurgy Group, Indira Gandhi Centre for Atomic Research, HBNI, Kalpakkam 603102, India

    • Dates

       
      Published
      18 November 2022
      Manuscript received
      5 May 2022
      Accepted
      3 August 2022
      Final version published online
      18 November 2022

  • Bulletin of Materials Science | News

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    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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