Interaction of Dislocations and Interfaces in Crystalline Heterostructures: A Review of Atomistic Studies

被引：22
|
作者：
Zhang, Zhibo [1 ,2 ,3 ,4 ]
Shao, Cancan [1 ,2 ]
Wang, Shuncheng [1 ,2 ]
Luo, Xing [1 ,2 ]
Zheng, Kaihong [1 ,2 ]
Urbassek, Herbert M. [3 ,4 ]
机构：
[1] Guangdong Prov Engn Res Ctr Met Matrix Composites, Guangdong Inst Mat & Proc, Guangzhou 510000, Guangdong, Peoples R China
[2] Guangdong Inst Mat & Proc, Guangdong Prov Key Lab Microbial Culture Collect, Guangzhou 510000, Guangdong, Peoples R China
[3] Univ Kaiserslautern, Phys Dept, Erwin Schrodinger Str, D-67663 Kaiserslautern, Germany
[4] Univ Kaiserslautern, Res Ctr OPTIMAS, Erwin Schrodinger Str, D-67663 Kaiserslautern, Germany
来源：
CRYSTALS | 2019年 / 9卷 / 11期
基金：
中国国家自然科学基金;
关键词：
dislocations; heterostructures; metallic materials; twin boundaries; grain boundaries; interface; molecular dynamics; COHERENT TWIN BOUNDARIES; MOLECULAR-DYNAMICS; GRAIN-BOUNDARIES; SCREW DISLOCATIONS; DEFORMATION MECHANISMS; LATTICE DISLOCATIONS; BICRYSTAL INTERFACES; STRENGTH; NANOINDENTATION; SIMULATIONS;
D O I：
10.3390/cryst9110584
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Interfaces in heterostructures of crystalline materials could strongly affect the slip of dislocations. Such interfaces have become one of the most popular methods to tailor material strength and ductility. This review focuses on the interaction of dislocations and interfaces in heterostructures, in which at least one component is metallic, as investigated by molecular dynamics, in order to systematically summarize our understanding about how dislocations interact with the interfaces. All the possible heterostructures of metallic materials are covered, such as twin boundaries, grain boundaries, bi-metal interfaces and metal/non-metal interfaces. Dislocations may either penetrate the interfaces by inducing steps into the interfaces or dissociate within the interfaces, depending on the type and orientation of the interface as well as the applied strain. Related dislocation interactions at the interface are also presented. In addition, we also discuss the effect of dislocation types, of applied strain and of the deformation method on the interaction of dislocations and interfaces.
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页数：14
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