Super lattices have been self-assembled under an unexpected circumstance. When a metal is radiated (with, e.g., neutrons) at an elevated temperature, voids will form inside it. These defects then either recombine or drift to sinks like dislocations and voids, thereby maintaining a quasi-steady state defect concentration. A bias is commonly observed: interstitials preferentially drift to dislocations, and vacancies coalesce to form voids[1]. Since strainenergy distribution around one void is inflenced by other voids, shape evolution of voids are inflenced by each other. This project aim at simulating the shape evolution process. Besides, a comparison of cases with and without voids interaction are made and ananlyzed.

1: Willis, J.R. (1975) The interaction of gas bubbles in an anisotropic elastic solid, J. Mech. Phys. Solids, 23, 129-138.

 

Team members:

Hai Wang

Zupan Hu

Xiaoda Sun


Copyright:2010 Win ME 574 team by iPageกก

Self-assembled super lattice

Introduction  Method   Theory   Simulation   Results  Code