Strain mapping in nanocrystalline grains simulated by phase field crystal model

Yaolin Guo, Jincheng Wang, Zhijun Wang, Junjie Li, Sai Tang, Feng Liu, Yaohe Zhou

科研成果: 期刊稿件文章同行评审

11 引用 (Scopus)

摘要

In recent years, the phase field crystal (PFC) model has been confirmed as a good candidate to describe grain boundary (GB) structures and their nearby atomic arrangement. To further understand the mechanical behaviours of nanocrystalline materials, strain fields near GBs need to be quantitatively characterized. Using the strain mapping technique of geometric phase approach (GPA), we have conducted strain mapping across the GBs in nanocrystalline grains simulated by the PFC model. The results demonstrate that the application of GPA in strain mapping of low and high angles GBs as well as polycrystalline grains simulated by the PFC model is very successful. The results also show that the strain field around the dislocation in a very low angle GB is quantitatively consistent with the anisotropic elastic theory of dislocations. Moreover, the difference between low angle GBs and high angle GBs is revealed by the strain analysis in terms of the strain contour shape and the structural GB width.

源语言英语
页(从-至)973-984
页数12
期刊Philosophical Magazine
95
9
DOI
出版状态已出版 - 24 3月 2015

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