Internal friction of grain boundaries in two-dimensional Yukawa solids

被引：1

作者：

Lu, Shaoyu ^{[1
]}

Huang, Dong ^{[1
]}

Liang, Chen ^{[1
]}

Feng, Yan ^{[1
]}

机构：

[1] Soochow Univ, Inst Plasma Phys & Technol, Sch Phys Sci & Technol, Jiangsu Key Lab Frontier Mat Phys & Devices, Suzhou 215006, Peoples R China

来源：

PHYSICAL REVIEW B | 2025年 / 111卷 / 17期

基金：

中国国家自然科学基金;

关键词：

DUSTY PLASMAS;

D O I：

10.1103/PhysRevB.111.174112

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Langevin dynamics simulations are performed to investigate the grain boundary internal friction (GBIF) in two-dimensional (2D) Yukawa solids under oscillating shear deformations. It is discovered that the GBIF exhibits a significant transition with the increasing misorientation angle, which can be used to distinguish the low-and high-angle grain boundaries (GBs). From the dependence of the GBIF on the shear amplitude and frequency, it is found that the internal friction of high-angle GBs exhibits typical properties of the linear anelasticity, while that of low-angle GBs does not. The variation trend of the calculated GB stiffness with the misorientation angle well agrees with that of GBIF, while the GB stiffnesses of the low-and high-angle GBs are both independent of frequency. For the transition between the low-and high-angle GBs of the misorientation angle B = n/9, the corresponding GB migration exhibits the normal diffusion, completely different from the ballistic motion of the GB migration of other misorientation angles.

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页数：9

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