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Nanocrystalline Mg–MAX composites: Mechanical behavior characterization via acoustic emission monitoring
Journal article   Peer reviewed

Nanocrystalline Mg–MAX composites: Mechanical behavior characterization via acoustic emission monitoring

Antonios Kontsos, Theodoros Loutas, Vassilis Kostopoulos, Kavan Hazeli, Babak Anasori and Michel W Barsoum
Acta materialia, v 59(14), pp 5716-5727
2011

Abstract

Mechanical properties Fatigue test Acoustic methods Magnesium Nanocrystalline materials
This paper reports on the mechanical behavior characterization of a nanocrystalline Mg–matrix composite reinforced with Ti 2AlC by using the acoustic emission (AE) method. When Mg is reinforced with Ti 2AlC, the damping is greatly enhanced and, because the Mg grains are in the 50–100 nm range, the resulting composite has excellent mechanical properties. Monotonic and cyclic tensile, as well as low-cycle fatigue tests were carried out while simultaneously recording the AE activity. The latter was analyzed post-mortem and was additionally coupled with advanced pattern recognition techniques for classification and clustering of the AE signals. The results provide evidence related to the activation and evolution of a possibly novel deformation mechanism in this nanocomposite, and are further found to agree with previously reported theoretical and experimental findings.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
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