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Issue 20, 2016
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Deformation of a ceramic/metal interface at the nanoscale

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Abstract

The mechanical response of heterophase interfaces has attracted substantial attention in recent years. Here, we utilized an in situ transmission electron microscopy (TEM) technique to isolate an individual nanoscale ceramic/metal interface and characterize its nanomechanical response. The interface, at which there was a Mg-rich segregation nanolayer between the single crystal ceramic (B4C) and the polycrystalline metal (Al alloy, AA5083), was determined to have a bond strength greater than 1.5 GPa. Bimodal failure and metallic grain rotation occurred in the metallic region, allowing the interface to accommodate a deformation strain of 5.4%. The roles of elemental segregation and nanoscale dimensions on interfacial debonding mechanisms are discussed.

Graphical abstract: Deformation of a ceramic/metal interface at the nanoscale

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Article information


Submitted
09 Mar 2016
Accepted
27 Apr 2016
First published
27 Apr 2016

Nanoscale, 2016,8, 10541-10547
Article type
Communication

Deformation of a ceramic/metal interface at the nanoscale

L. Jiang, T. Hu, H. Yang, D. Zhang, T. Topping, E. J. Lavernia and J. M. Schoenung, Nanoscale, 2016, 8, 10541
DOI: 10.1039/C6NR02011A

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