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dc.titleDynamic tensile properties of magnesium nanocomposite
dc.contributor.authorGuo, Y.B.
dc.contributor.authorShim, V.P.W.
dc.contributor.authorTan, B.W.F.
dc.identifier.citationGuo, Y.B., Shim, V.P.W., Tan, B.W.F. (2012). Dynamic tensile properties of magnesium nanocomposite. Materials Science Forum 706-709 : 780-785. ScholarBank@NUS Repository.
dc.description.abstractIn this study, a Mg-6wt%Al alloy and its composite containing 0.22vol% Al 2O 3 nanoparticles are fabricated using a disintegrated melt deposition technique, and samples are subjected to quasi-static and dynamic tension. Compared to quasi-static loading, both materials exhibit significantly higher yield stresses and tensile strengths, much better ductility, and thus a higher energy absorption capacity under dynamic tension. In terms of nano-particle addition, its influence on the mechanical properties are not notable; enhancement of the elastic modulus, yield stress and tensile strength are negligible, and there is a small reduction in ductility. The tensile behaviour obtained in this investigation was compared with results of previous compression tests, and significant tension-compression asymmetry in the response is observed. The tensile yield stress is noticeably larger than that in compression, and the profile of the stress-strain curve for tension differs from that for compression - it is convex upwards for tension, but concave upwards for compression. A possible reason for this asymmetry is the occurrence of twinning in compression and its absence in tension. © 2012 Trans Tech Publications, Switzerland.
dc.subjectDynamic loading
dc.subjectMagnesium nanocomposite
dc.subjectSplit Hopkinson Tensile Bar
dc.typeConference Paper
dc.contributor.departmentMECHANICAL ENGINEERING
dc.description.sourcetitleMaterials Science Forum
Appears in Collections:Staff Publications

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