Atomistic simulation of interaction between wedge disclination and self-interstitial atom in bcc tungsten
Source abstract
Abstract
Abstract Molecular dynamics method has been employed to investigate the interaction between wedge disclination and self-interstitial atom in bcc tungsten. Long-range tensile stress field is shown around the disclination. The interaction energy between self-interstitial atom and the disclination ranges from − 1 eV to − 6.13 eV , which decreases with self-interstitial atom closer to the disclination core. Self-interstitial atoms around the disclination can be absorbed by the edge dislocations of the disclination, leading to a negative climb and thus reduction of the strain energy. It can be concluded that absorption of self-interstitial atoms by the wedge disclination is an energy downhill process, and disclination can serve as an effective sink for eliminating the radiation-induced self-interstitial atoms in bcc tungsten.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fusion materials and technologies · Nuclear Materials and Properties · Nuclear materials and radiation effects
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References (48)
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