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The effect of ageing on the compressive deformation of Mg-Sn-Zn-Na alloy
conference contributionposted on 2016-01-01, 00:00 authored by E B Motlagh, Alireza Ghaderi, Sitarama KadaSitarama Kada, Peter LynchPeter Lynch, Matthew BarnettMatthew Barnett
The influence of ageing on deformation twinning in an extruded Mg-6Sn-3Zn-0.04Na alloy is investigated. In-situ compression tests have been carried out using high resolution synchrotron X-Ray Diffraction (XRD) to measure the influence of precipitates on twining activity. Synchrotron experiments revealed the increase in the critical resolved shear stress of twinning with ageing. The compressive yield strength (along the extrusion direction) of the aged sample increased by ∼ 150% over the non-aged specimen. To obtain statistical insight into the twinning activity, the microstructure of the non-aged and aged samples (200°C, 24 hours) deformed up to ∼1% plastic strain was studied using optical microscopy. A higher number of thinner twins were observed in the microstructure of the aged sample compared to the non-aged sample.
EventMagnesium Technology. Symposium (2016 : Nashville, Tennessee)
SeriesMagnesium Technology 2016
Pagination93 - 96
PublisherJohn Wiley & Sons
Place of publicationHoboken, N.J.
Publication classificationE Conference publication; E1 Full written paper - refereed
Copyright notice2016, The Minerals, Metals & Materials Society
Editor/Contributor(s)A Singh, K Solanki, M Manuel, N Neelameggham
Title of proceedingsMagnesium Technology 2016 : Proceedings of a Symposium held during TMS2016 145th Annual Meeting & Exhibition
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