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    Nanoparticle enhanced eutectic reaction during diffusion brazing of aluminium to magnesium

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    Cooke_et_al_Nanomaterials (12.30Mb)
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    Publication date
    2019-03
    Author
    Akhtar, T.S.
    Cooke, Kavian O.
    Khan, Tahir I.
    Shar, M.S.
    Keyword
    Microstructure
    Transient liquid phase diffusion brazing
    Nanoparticles
    Interlayer
    Electrodeposited
    Rights
    © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
    Peer-Reviewed
    Yes
    
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    Abstract
    Diffusion brazing has gained much popularity as a technique capable of joining dissimilar lightweight metal alloys and has the potential for a wide range of applications in aerospace and transportation industries, where microstructural changes that will determine the mechanical and chemical properties of the final joint must be controlled. This study explores the effect of Al2O3 nanoparticles on the mechanical and microstructural properties of diffusion brazed magnesium (AZ31) and aluminium (Al-1100) joints. The results showed that the addition of Al2O3 nanoparticle to the electrodeposited Cu coating increased the volume of eutectic liquid formed at the interface which caused a change to the bonding mechanism and accelerated the bonding process. When the Cu/Al2O3 nanocomposite coatings were used as the interlayer, a maximum bond strength of 46 MPa was achieved after 2 min bonding time while samples bonded using pure-Cu interlayers achieved maximum strength after 10 min bonding time. Chemical analysis of the bond region confirmed that when short bonding times are used, the intermetallic compounds formed at the interface are limited to the compounds consumed in the eutectic reaction.
    URI
    http://hdl.handle.net/10454/17234
    Version
    Published version
    Citation
    Akhtar TS, Cooke KO, Khan TI et al (2019) Nanoparticle enhanced eutectic reaction during diffusion brazing of aluminium to magnesium. Nanomaterials. 9(3): 370.
    Link to publisher’s version
    https://doi.org/10.3390/nano9030370
    Type
    Article
    Collections
    Engineering and Informatics Publications

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