NDLI: Atomic-Scale Studies of Defect Interactions with Homo- and Heterophase Interfaces

Content Provider	Springer Nature Link
Author	Martínez, Enrique Uberuaga, Blas P. Beyerlein, Irene J.
Copyright Year	2016
Abstract	Interfaces are planar metastable defects with singular features capable of controlling diverse material properties, including mechanical response and the microstructure evolution in materials under irradiation. This ability of interfaces to dictate the material response resides inherently in their atomic structure, which controls the interactions of dislocations as well as point and defect clusters with the interface. We recently showed how dislocations nucleated from defect clusters interact with a heterophase interface in Cu–Nb layered composites. We also showed how the ability of the interface to absorb vacancy clusters depends on the atomic structure at the interface. Herein, we elaborate on the effect of the atomic structure on the ability of the interface to absorb dislocations as well as vacancy and self-interstitial defect clusters. We study a physical-vapor-deposited Kurdjumov–Sachs orientation in a Cu–Nb interface and an asymmetric $$\Sigma $$ 11 grain boundary in pure Cu. On the one hand, the manner in which dislocations react with the interface depends on the misfit dislocation arrangement, which substantially differs between these two cases. On the other hand, vacancy and self-interstitial clusters are absorbed similarly upon interaction with both structures.
Starting Page	1616
Ending Page	1624
Page Count	9
File Format	PDF
ISSN	10474838
Journal	JOM
Volume Number	68
Issue Number	6
e-ISSN	15431851
Language	English
Publisher	Springer US
Publisher Date	2016-04-11
Publisher Institution	The Minerals, Metals & Materials Society (TMS)
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Engineering Chemistry/Food Science Physics Environment Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Engineering Materials Science

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