Abstract
We report the first principles calculations of the defect energetics and dynamics in W ternary alloys. A solute pair of different kinds strongly attracts a W self-interstitial atom, forming a solute-interstitial triple complex. The attractive solute-interstitial interaction can be stronger in ternary than in binary alloys, which works as a primary dissociation barrier to reduce the interstitial mobility. This, in turn, means that a single solute-interstitial pair also attracts a solute atom of a different kind to form a triple complex. The dissociation energy of a triple complex slows the interstitial migration, and increases the odds of vacancy-interstitial recombination in collision cascades. Therefore the reduced interstitial mobility and increased interstitial retention ability of multicomponent alloys may change the fundamental irradiated-damage mechanism in fusion environment.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.