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|Title:||Compressive deformation behavior of Mg and Mg/(Y2O3+Ni) nanocomposites|
|Authors:||Tun, K.S. |
|Citation:||Tun, K.S., Gupta, M. (2010-08). Compressive deformation behavior of Mg and Mg/(Y2O3+Ni) nanocomposites. Materials Science and Engineering A 527 (21-22) : 5550-5556. ScholarBank@NUS Repository. https://doi.org/10.1016/j.msea.2010.05.025|
|Abstract:||Uniaxial compressive properties of Mg and Mg/(Y2O3+Ni) hybrid nanocomposite are studied in the present paper. A remarkable improvement in both 0.2% CYS and UCS is exhibited by hybrid nanocomposites when compared to pure Mg. Subsequently, plastic deformation due to twinning activity and basal plane orientation detected by X-ray diffraction at different strain levels are investigated. Both Mg and hybrid composites yield by twinning deformation and extensive twinning supports reorientation of basal (0002) planes after yielding. Upon twin saturation, basal planes get orientated perpendicular to the compression axis in composite sample, causing a steep increment in work hardening with limited failure strain. However, in the case of pure Mg, complete basal reorientation did not take place. As a result, continuous twin deformation provided gradual work hardening leading to appreciable failure strain in the case of Mg when compared to its reinforced counterparts. © 2010 Elsevier B.V.|
|Source Title:||Materials Science and Engineering A|
|Appears in Collections:||Staff Publications|
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