Skip navigation

Modeling the break-up of nano-particle clusters in aluminum- and magnesium-based metal matrix nano-composites

Modeling the break-up of nano-particle clusters in aluminum- and magnesium-based metal matrix nano-composites

Manoylov, Anton, Bojarevics, Valdis and Pericleous, Koulis ORCID: 0000-0002-7426-9999 (2015) Modeling the break-up of nano-particle clusters in aluminum- and magnesium-based metal matrix nano-composites. Metallurgical and Materials Transactions A, 46 (7). pp. 2893-2907. ISSN 1073-5623 (Print), 1543-1940 (Online) (doi:https://doi.org/10.1007/s11661-015-2934-0)

[img]
Preview
PDF (Author's Accepted Manuscript)
13651_MANOYLOV_BOJAREVICS_PERICLEOUS_(MMTA_AAM_version_2015).pdf - Accepted Version
Available under License Creative Commons Attribution Non-commercial.

Download (2MB)
[img] PDF (Email of Acceptance)
13651_MANOYLOV_BOJAREVICS_PERICLEOUS_(MMTA_Acceptance_email_13Apr2015).pdf - Additional Metadata
Restricted to Repository staff only

Download (102kB)

Abstract

Aluminum- and magnesium-based metal matrix nano-composites with ceramic nano-reinforcements promise low weight with high durability and superior strength, desirable properties in aerospace, automobile, and other applications. However, nano-particle agglomerations lead to adverse effects on final properties: large-size clusters no longer act as dislocation anchors, but instead become defects; the resulting particle distribution will be uneven, leading to inconsistent properties. To prevent agglomeration and to break-up clusters, ultrasonic processing is used via an immersed sonotrode, or alternatively via electromagnetic vibration. A study of the interaction forces holding the nano-particles together shows that the choice of adhesion model significantly affects estimates of break-up force and that simple Stokes drag due to stirring is insufficient to break-up the clusters. The complex interaction of flow and co-joint particles under a high frequency external field (ultrasonic, electromagnetic) is addressed in detail using a discrete-element method code to demonstrate the effect of these fields on de-agglomeration.

Item Type: Article
Additional Information: The Author's Accepted Manuscript version has been uploaded in accordance with the publisher's self-archiving policy. This is the Author’s Accepted Manuscript version of a paper published in METALLURGICAL AND MATERIALS TRANSACTIONS A by Springer US on 12 May 2015. The final publication is available at Springer via http://dx.doi.org/10.1007/s11661-015-2934-0.
Uncontrolled Keywords: Modeling; Break-up of nano-particle clusters; Aluminum, Magnesium; Nano-composites
Subjects: Q Science > QA Mathematics
Q Science > QD Chemistry
Faculty / Department / Research Group: Faculty of Architecture, Computing & Humanities
Faculty of Architecture, Computing & Humanities > Centre for Numerical Modelling & Process Analysis (CNMPA) > Computational Science & Engineering Group (CSEG)
Faculty of Architecture, Computing & Humanities > Department of Mathematical Sciences
Last Modified: 02 Mar 2019 15:53
Selected for GREAT 2016: None
Selected for GREAT 2017: GREAT a
Selected for GREAT 2018: None
Selected for GREAT 2019: None
URI: http://gala.gre.ac.uk/id/eprint/13651

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics