This article is cited in 8 papers

A pileup of screw dislocations against an inclined bimetallic interface

Vlado A. Lubarda

Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093-0448, USA

Abstract: Pileups of screw dislocations against an inclined bimetallic interface are considered. It is assumed that differently oriented pileups are either under the same remote uniform loading, or under the same resolved shear stress along the pileup direction for any orientation of the interface. The distributions of dislocations and the lengths of pileups are substantially different for differently oriented interfaces, particularly in the case of the same remote loading. The interface stresses are also strongly depended on the pileup orientation. The maximum stress can be higher for a pileup along an inclined direction than along the direction orthogonal to the interface. The back stress behind a pileup is evaluated and discussed.

Keywords: back stress, bimetallic interface, dislocation pileup, screw dislocation, stress concentration.

MSC: 74B99, 74L99

Received: 04.05.2017
Revised: 07.08.2017

Language: English

DOI: 10.2298/TAM170504007L

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