Paul, Surajit Kumar and Kumar, Sunil and Tarafder, S (2018) Orientation-dependent crack-tip blunting and crack propagation in a single crystal BCC iron. Bulletin of Material Science, 41(6) (IF-1.264). pp. 1-6.
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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 of crack 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.
|Uncontrolled Keywords:||Crack propagation; crack-tip blunting; molecular dynamics; crystal orientation; BCC iron|
|Divisions:||Material Science and Technology|
|Deposited By:||Sahu A K|
|Deposited On:||18 Sep 2019 18:03|
|Last Modified:||18 Sep 2019 18:03|
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