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    • SURAJIT KUMAR PAUL

      Articles written in Bulletin of Materials Science

    • Volume 41 Issue 6 December 2018 Article ID 0148

      Orientation-dependent crack-tip blunting and crack propagation in a single crystal BCC iron

      SURAJIT KUMAR PAUL SUNIL KUMAR S TARAFDER

      More Details Abstract Fulltext PDF

      Atomistic simulations of cracks with four different orientations in body-centered cubic single crystal iron are presented using molecular dynamics. Crystal orientation has considerable effect on the activation and evolution ofcrack propagation mechanisms. The results reveal that (a) crack-tip blunting depends on the crystallographic orientation, (b) continuous generation of dislocations form crack tip occurs for large crack-tip blunting, and (c) absence of deformation activities like dislocation generation, twin formation, etc. at the crack tip results in crack propagation in a brittle manner.

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