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dc.contributor.authorMontalba, C-
dc.contributor.authorEskin, DG-
dc.contributor.authorMiranda, A-
dc.contributor.authorRojas, D-
dc.contributor.authorRamam, K-
dc.identifier.citationMaterials and Design, 84: 110 - 117, (2015)en_US
dc.description.abstractIn this study, electroceramics PBN and PLZT along with SiC were included in Al-3.96. wt.%. Mg (A514.0) master alloy. Ultrasonic cavitation (UST) and mechanical stirring (MS) were employed to improve wettability and dispersion during casting. Two composite systems were produced: PBN system (5. wt.% PBN + 1. wt.% SiC and 15. wt.% PBN + 1. wt.% SiC) and the PLZT system (follows the same designation). The influence of fabrication method on the microstructures, particle distribution and wettability as well as electroceramic impact on dynamo-mechanical properties of prepared composites were investigated. Optical microscope (OM) and scanning electron microscope (SEM) results indicate that the processing technique was effective as it promoted wettability and homogeneous dispersion of particles throughout the Al matrix. Dynamic mechanical analysis (DMA) study of the composites demonstrated that the addition of the functional particles to the Al alloy matrix improved damping capacity (Tan δ) at 200. °C. The composites exhibited an increase in Tan δ of 24.3 ± 0.3% and 91.4 ± 0.2% for 5 and 15. wt.% PBN + 1. wt.% SiC and an increase of 19.7 ± 0.5% and 42.5 ± 0.3% for 5 and 15. wt.% PLZT + 1. wt.% SiC, respectively, when compared to the aluminium alloy matrix.en_US
dc.description.sponsorshipThe authors CMW and Koduri Ramam acknowledge and are grateful to CONICYT for Doctoral Research Fellowship and also acknowledge Brunel University, UK for hosting internship to carry out doctoral research work as Universidad Carlos III, Spain, for characterization support. The authors Koduri Ramam and CMW greatly acknowledge the Fondecyt Research Project Number 1110583 for the financial support with the research project and characterization equipment.en_US
dc.format.extent110 - 117-
dc.subjectHybrid metal matrix compositeen_US
dc.subjectUltrasonic cavitationen_US
dc.subjectMechanical stirringen_US
dc.titleEffect of electroceramic particles on damping behaviour of aluminium hybrid composites produced by ultrasonic cavitation and mechanical stirringen_US
dc.relation.isPartOfMaterials and Design-
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