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Micro-mechanical testing of magnesium based composites reinforced by carbon fibers manufactured by friction stir processing
Simar, Aude; Ryelandt, Sophie; Delannay, Francis et al.
2017TMS 2017 146th Annual Meeting and Exhibition
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Keywords :
Mg alloys; Metal matrix composites; FSP; Micro-mechanical testing; Thermal treatments
Abstract :
[en] Short C fibres–Mg matrix (AZ91D) composites have been produced by friction stir processing sandwiches made of a layer of C fabric stacked between two sheets of Mg alloy. The process parameters have been optimized to ensure a good fiber distribution. 3D X-ray tomography reveals that the fibers orient like onion rings. Thermal treatments have allowed to modify the flow stress level of the matrix material. Tensile testing inside the scanning electron microscope have revealed the decohesion at the fiber/matrix interface if the fibers are preferentially oriented perpendicularly to the loading direction. Modelling allows to estimate the stress needed to initiate this decohesion is about 250 MPa, i.e. appearing early in heat treated samples. To compare with different loading conditions, micro-compression and instrumented micro-indentation testing have also been performed. The consequence of the loading path on the decohesion is discussed.
Disciplines :
Materials science & engineering
Author, co-author :
Simar, Aude;  Université Catholique de Louvain - UCL > iMMC > IMAP
Ryelandt, Sophie;  Univesité catholique de Louvain > iMMC > IMAP
Delannay, Francis;  Université Catholique de Louvain - UCL > iMMC > IMAP
Mertens, Anne  ;  Université de Liège > Département d'aérospatiale et mécanique > Science des matériaux métalliques
Lecomte-Beckers, Jacqueline ;  Université de Liège > Département d'aérospatiale et mécanique > Science des matériaux métalliques
Brassart, Laurence;  Monash University
Language :
English
Title :
Micro-mechanical testing of magnesium based composites reinforced by carbon fibers manufactured by friction stir processing
Publication date :
28 February 2017
Event name :
TMS 2017 146th Annual Meeting and Exhibition
Event place :
San Diego (CA), United States
Event date :
du 26 février 2017 au 2 mars 2017
Audience :
International
Peer reviewed :
Peer reviewed
Available on ORBi :
since 14 March 2017

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