Stabilizing force on perturbed grain boundaries using a dislocation model

被引：7
作者：
Zhu, Xiaohong [1 ,2 ]
Xiang, Yang [1 ]
机构：
[1] Hong Kong Univ Sci & Technol, Dept Math, Kowloon, Hong Kong, Peoples R China
[2] Jinan Univ, Dept Math, Guangzhou 510632, Guangdong, Peoples R China
来源：
SCRIPTA MATERIALIA | 2011年 / 64卷 / 01期
关键词：
Grain boundary migration; Dislocation dynamics; Mechanical stress; Micromechanical modeling; SHEAR DEFORMATION; MIGRATION; MOTION; DYNAMICS; SIMULATION;
D O I：
10.1016/j.scriptamat.2010.08.050
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this paper, we study the glide force due to stress on the constituent dislocations of slightly perturbed symmetric low-angle tilt boundaries We show that the stabilizing force comes from both the long-range interaction of the constituent dislocations and their local line tension effect We also present a continuum model for this glide force The obtained results and continuum model provide a basis for further understanding of the stress-driven migration of distorted grain boundaries (C) 2010 Acta Materialia Inc Published by Elsevier Ltd All rights reserved
引用
收藏
页码：5 / 8
页数：4
相关论文
共 50 条
  • [31] Stress-assisted grain-rotation-induced dislocation emission from grain boundaries in nanocrystalline face-centered-cubic metals
    Li, Jianjun
    Chen, Shaohua
    Weng, George J.
    Liu, Chunhui
    PHILOSOPHICAL MAGAZINE LETTERS, 2019, 99 (12) : 466 - 478
  • [32] Grain boundary effect on nanoindentation: A multiscale discrete dislocation dynamics model
    Lu, Songjiang
    Zhang, Bo
    Li, Xiangyu
    Zhao, Junwen
    Zaiser, Michael
    Fan, Haidong
    Zhang, Xu
    JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 2019, 126 : 117 - 135
  • [33] Amorphization induced by 60° shuffle dislocation pileup against different grain boundaries in silicon bicrystal under shear
    Chen, Hao
    Levitas, Valery I.
    Xiong, Liming
    ACTA MATERIALIA, 2019, 179 : 287 - 295
  • [34] Grain-boundary shear-migration coupling. II. Geometrical model for general boundaries
    Caillard, D.
    Mompiou, F.
    Legros, M.
    ACTA MATERIALIA, 2009, 57 (08) : 2390 - 2402
  • [35] Atomic Model for Alkali Metal Passivation of Point Defects at Perovskite Grain Boundaries
    Qiao, Lu
    Fang, Wei-Hai
    Long, Run
    Prezhdo, Oleg, V
    ACS ENERGY LETTERS, 2020, 5 (12) : 3813 - 3820
  • [36] Atomistically motivated interface model to account for coupled plasticity and damage at grain boundaries
    Rezaei, Shahed
    Jaworek, David
    Mianroodi, Jaber Rezaei
    Wulfinghoff, Stephan
    Reese, Stefanie
    JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 2019, 124 : 325 - 349
  • [37] Abnormal grain growth in the Potts model incorporating grain boundary complexion transitions that increase the mobility of individual boundaries
    Frazier, William E.
    Rohrer, Gregory S.
    Rollett, Anthony D.
    ACTA MATERIALIA, 2015, 96 : 390 - 398
  • [38] Multiscale analyses of the interaction between dislocation and σ9 symmetric tilt grain boundaries in Fe-Si bicrystals by nanoindentation technique
    Wakeda, Masato
    Chang, Ya-Ling
    Ii, Seiichiro
    Ohmura, Takahito
    INTERNATIONAL JOURNAL OF PLASTICITY, 2021, 145
  • [39] Modelling and simulation of chatter in milling using a predictive force model
    Li, HZ
    Li, XP
    INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 2000, 40 (14) : 2047 - 2071
  • [40] A Predictive Framework for Dislocation-Density Pile-Ups in Crystalline Systems With Coincident Site Lattice and Random Grain Boundaries
    Bond, David M.
    Zikry, Mohammed A.
    JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME, 2017, 139 (02):
12345