GRAIN BOUNDARY ROTATIONS NEAR CRACK TIPS IN DEFORMED NANOMATERIALS

被引：0
作者：
Ovid'ko, I. A. [1 ,2 ,3 ]
Sheinerman, A. G. [1 ,2 ,3 ]
机构：
[1] St Petersburg State Univ, Dept Math & Mech, St Petersburg 198504, Russia
[2] Russian Acad Sci, Inst Problems Mech Engn, St Petersburg 199178, Russia
[3] St Petersburg State Polytech Univ, St Petersburg 195251, Russia
来源：
REVIEWS ON ADVANCED MATERIALS SCIENCE | 2014年 / 37卷 / 1-2期
关键词：
THIN-FILMS; NANOCRYSTALLINE; DEFORMATION; DUCTILITY; STRENGTH; METALS; AL; NANOINDENTATION; BEHAVIOR; ALLOYS;
D O I：
暂无
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A special mechanism/mode of plastic deformation occurring through stress-driven rotations of low-angle grain boundaries (GBs) near crack tips in nanocrystalline and ultrafine-grained (UFG) materials is theoretically described. It is demonstrated that such rotations of GBs represent energetically favorable processes in wide ranges of parameters characterizing pre-cracked specimens with nanocrystalline and UFG structures. Also, these rotations of GBs in part release high stresses concentrated near crack tips and thus hamper crack growth.
引用
收藏
页码：97 / 104
页数：8
相关论文
共 50 条
[41]   Dynamic Precipitation of Laves Phase and Grain Boundary Features in Warm Deformed FeCrAl Alloy: Effect of Zr [J].
Liu, Wenbo ;
Liu, Zhe ;
Liu, Huiqun ;
Du, Peinan ;
Zhang, Ruiqian ;
Wang, Qing .
ACTA METALLURGICA SINICA-ENGLISH LETTERS, 2021, 34 (12) :1734-1746
[42]   Influence of grain boundary sliding and grain size on dislocation emission from a crack tip [J].
Fang, Qihong ;
Zhang, Liangchi ;
Liu, Youwen .
INTERNATIONAL JOURNAL OF DAMAGE MECHANICS, 2014, 23 (02) :192-202
[43]   Evaluation of near-threshold fatigue crack propagation in harmonic-structured CP titanium with a bimodal grain size distribution [J].
Kikuchi, Shoichi ;
Mori, Tetsuya ;
Kubozono, Hiroki ;
Nakai, Yoshikazu ;
Kawabata, Mie Ota ;
Ameyama, Kei .
ENGINEERING FRACTURE MECHANICS, 2017, 181 :77-86
[44]   Molecular dynamics simulation of grain boundary geometry on crack propagation of bi-crystal aluminum [J].
Fang, Wei ;
Xie, Hongxian ;
Yin, Fuxing ;
Li, Jia ;
Khan, Dil Faraz ;
Fang, Qian .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 666 :314-319
[45]   Effect of microstructure and grain boundary chemistry on slow crack growth in silicon carbide at ambient conditions [J].
Al Nasiri, N. ;
Ni, N. ;
Saiz, E. ;
Chevalier, J. ;
Giuliani, F. ;
Vandeperre, L. J. .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2015, 35 (08) :2253-2260
[46]   Studies of grain boundary regions in deformed polycrystalline aluminum using spherical nanoindentation [J].
Vachhani, Shraddha J. ;
Doherty, Roger D. ;
Kalidindi, Surya R. .
INTERNATIONAL JOURNAL OF PLASTICITY, 2016, 81 :87-101
[47]   Rate-dependent size effects and material length scales in nanoindentation near the grain boundary for a bicrystal FCC metal [J].
Zhang, Cheng ;
Voyiadjis, George Z. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 659 :55-62
[48]   Near-theoretical strength and deformation stabilization achieved via grain boundary segregation and nano-clustering of solutes [J].
Liu, Chang ;
Rao, Jing ;
Sun, Zhongji ;
Lu, Wenjun ;
Best, James P. ;
Li, Xuehan ;
Xia, Wenzhen ;
Gong, Yilun ;
Wei, Ye ;
Zhang, Bozhao ;
Ding, Jun ;
Wu, Ge ;
Ma, En .
NATURE COMMUNICATIONS, 2024, 15 (01)
[49]   Predicting virtual creep crack growth in a simulated titanium aluminide alloy microstructure containing voids, precipitates, and grain/grain boundary distortions [J].
Hu, Yun ;
Xi, Jiangjing ;
Jiang, Jun ;
Lei, Min ;
Song, Minjie ;
Nikbin, Kamran .
ENGINEERING FRACTURE MECHANICS, 2022, 262
[50]   Effect of cooperative grain boundary sliding and migration on emission of dislocations from a crack tip in nanocrystalline materials [J].
Feng, H. ;
Fang, Q. H. ;
Zhang, L. C. ;
Liu, Y. W. .
MECHANICS OF MATERIALS, 2013, 61 :39-48
12345