Nanoscale amorphization at disclination quadrupoles in deformed nanomaterials and polycrystals

作者：Bobylev S V^*; Ovid'ko I A

来源：Applied Physics Letters, 2008, 93(6): 061904.

DOI：10.1063/1.2953448

Special micromechanism of nanoscale amorphization (crystal-to-glass transition in nanoscale regions) in deformed nano- and polycrystalline materials is suggested and theoretically described. The nanoscale amorphization occurs through transformation of disclination quadrupoles generated during plastic deformation. It is shown that the nanoscale amorphization at disclination quadrupoles is energetically favorable in nano- and polycrystalline Si and Si(3)N(4) deformed at high applied stresses in certain ranges of their structural parameters.

• 出版日期2008-8-11