Mechanical properties enhancement of 66/34Mg-alloy for medical application
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Date
2014
Authors
Adeosun, S.O.
Sekunowo, O.I.
Gbenebor, O.P.
Ayoola, W.A.
Odunade, T.A.
Journal Title
Journal ISSN
Volume Title
Publisher
International Journal of Medical, Pharmaceutical Science and Engineering
Abstract
Sand cast samples of the as-received 66/34Mg-Al alloy were first homogenized at 4900C and then divided into three
groups on which annealing, normalising and artificial ageing were respectively carried out. Thermal ageing of the samples involved treatment at 5000C, soaked for 4 hours and quenched in water at ambient temperature followed by tempering at 2000C for 2 hours. Test specimens were subjected to microstructure and mechanical analyses and the results compared. Precipitation of significant volume of stable Mg17Al12 crystals in the aged specimen’s matrix conferred superior mechanical characteristics compared with the annealed, normalized and as-cast specimens. The ultimate tensile
strength was 93.4MPa with micro-hardness of 64.9HRC and impact energy (toughness) of 4.05J. In particular, its Young modulus was 10.4GPa which compared well with that of cortical (trabecule) bone’s modulus that varies from 12-17GPa.
Description
Staff publications
Keywords
Medical inplant , Mechanical properties , Artificial ageing , Mg-Al Alloy , Research Subject Categories::TECHNOLOGY
Citation
Adeosun, S. O., Sekunowo, O.I., Gbenebor, O.P., Ayoola, W.A., Odunade, T.A. (2014). Mechanical properties enhancement of 66/34Mg-alloy for medical application, World Academy of Science, Engineering and Technology. International Journal of Medical, Pharmaceutical Science and Engineering, 8(2): 88-91