Microstructure and damping characteristics of Mg and its composites containing metastable Al 85 Ti 15 particle

This paper reports for the first time the damping behavior of Mg-Al 85 Ti 15 metastable composites synthesized using near dense blend-press-microwave sinter-hot extrusion methodology. Optical microscopy results show that the metastable particles were located along the grain boundaries and the format...

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Bibliographic Details
Published in:Journal of composite materials 2016-08, Vol.50 (18), p.2565-2573
Main Authors: Nguyen, Quy B, Nai, Mui LS, Nguyen, Anh S, Seetharaman, Sankaranarayanan, Jayalakshmi, S, Leong, Eugene WW, Gupta, Manoj
Format: Article
Language:English
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Summary:This paper reports for the first time the damping behavior of Mg-Al 85 Ti 15 metastable composites synthesized using near dense blend-press-microwave sinter-hot extrusion methodology. Optical microscopy results show that the metastable particles were located along the grain boundaries and the formation of twins within the grains. In addition, scanning electron microscopy reveals reasonable distribution of particles, good matrix-particle interfacial bonding and minimal presence of microvoids. The damping test results show an increment in damping capacity and damping loss rate with the presence and increasing amount of particles. The effect of microstructure on damping characteristics of magnesium and damping mechanisms are discussed.
ISSN:0021-9983
1530-793X
DOI:10.1177/0021998315608432