Effects of elasticity and dislocation core structure on the interaction of dislocations with embedded CNTs in aluminium: An atomistic simulation study

Nasiri S, Zaiser M (2022)


Publication Type: Journal article

Publication year: 2022

Journal

Book Volume: 21

Article Number: 101347

DOI: 10.1016/j.mtla.2022.101347

Abstract

The interaction between edge dislocations and carbon nanotubes (CNTs) embedded into an Al matrix is investigated. Both pristine and Ni-coated CNTs are considered. It is demonstrated that the embedded CNTs lead to a yield stress contribution equivalent to that of an array of non-shearable inclusions that are by-passed via the Orowan mechanism. The strain hardening mechanism associated with multiple dislocation passes shows, however, strong effects of atomistic core structure such as crystallographic and non-crystallographic cross slip of near-screw segments on the CNT-metal interface, dislocation lock formation and annihilation, jog formation and shedding of prismatic dislocation loops.

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How to cite

APA:

Nasiri, S., & Zaiser, M. (2022). Effects of elasticity and dislocation core structure on the interaction of dislocations with embedded CNTs in aluminium: An atomistic simulation study. Materialia, 21. https://dx.doi.org/10.1016/j.mtla.2022.101347

MLA:

Nasiri, Samaneh, and Michael Zaiser. "Effects of elasticity and dislocation core structure on the interaction of dislocations with embedded CNTs in aluminium: An atomistic simulation study." Materialia 21 (2022).

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