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Open AccessReview

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

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Guangdong Provincial Engineering Research Center of Metal-Matrix-Composites Database, Guangdong Institute of Materials and Processing, Guangzhou 510000, China
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Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Materials and Processing, Guangzhou 510000, China
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Physics Department and Research Center OPTIMAS, University Kaiserslautern, Erwin-Schrödinger-Straße, D-67663 Kaiserslautern, Germany
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Authors to whom correspondence should be addressed.
Crystals 2019, 9(11), 584; https://doi.org/10.3390/cryst9110584
Received: 8 October 2019 / Revised: 31 October 2019 / Accepted: 5 November 2019 / Published: 7 November 2019
(This article belongs to the Special Issue Dislocations in Heterostructures)
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. View Full-Text
Keywords: dislocations; heterostructures; metallic materials; twin boundaries; grain boundaries; interface; molecular dynamics dislocations; heterostructures; metallic materials; twin boundaries; grain boundaries; interface; molecular dynamics
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MDPI and ACS Style

Zhang, Z.; Shao, C.; Wang, S.; Luo, X.; Zheng, K.; Urbassek, H.M. Interaction of Dislocations and Interfaces in Crystalline Heterostructures: A Review of Atomistic Studies. Crystals 2019, 9, 584.

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