Mechanical Properties Enhancement of 66/34Mg-Alloy for Medical Application
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.
[1] Y. O. Kojima, "Platform Science and Technology for Advance Magnesium Alloys,” Science Forum, pp. 350-35, 2000.
[2] C. L. Liu, Y. C. Xin, and P. R. Chu, "Influence of Heat Treatment on Degradation Behavior of Bio-Degradable Die-Cast AZ63 Magnesium Alloy in Simulated Body Fluid,” Materials Science Engineering A, vol. 456, pp. 350-357, 2007.
[3] E. Zhang, and L. Yang, "Microstructure, Mechanical Properties and Bio-Corrosion Properties of Mg-Zn-Mn-Ca Alloy for Biomedical Application,” Materials Science Engineering A, vol. 497, pp. 111-118, 2008.
[4] M. P. Staiger, A. M. Pietaka, J. Huadamaia and G. Dias, "Magnesium and Its Alloys as Orthopedic Biomaterials, Journal of Biomaterials, vol.27, pp.1728-1734, 2006.
[5] X. Guand and Z. Zheng, "A Review on Magnesium Alloys as Biodegradable Materials,” Materials Science, vol.4, no.2, pp. `111-115, 2010.
[6] M. Niinom and M. Nakai, "Titanium Based Biomaterials for Preventing Stress Shielding between Implant Devices and Bone,” International Journal of Biomaterials, 2011.
[7] Y. Hideki, F. Mikio and C. Akihiko, "Determination of the Mechanical Properties of Extruded Pure Magnesium during Tension–Tension low-Cycle Fatigue Using Ultrasonic Testing,” Materials Transactions, vol.51, no.11, pp. 2025-2032, 2010.
[8] C.K. Seal, K. Vince and M.A. Hodgson, "Biodegradable Surgical Implants Based On Magnesium Alloys – A Review of Current Research, IOP Conf. Series: Materials Science and Engineering, vol.4, pp. 1-4, 2009.
[9] F. Wittea, V. Kaese, H. Switzer, L. A. Meyer, C. J. Wirth and H. Winuag, "In vivo Corrosion of Four Magnesium Alloys and the Associated Response, Biomaterials, vol.26, no.17, pp. 3557-3563.2005.
[10] L. Li, J. Gao and Y. Wang, "Evaluation of Cyto-Toxicity and Corrosion Behavior of Alkali-Heat-Treated Magnesium in Simulated Body Fluid, Surface Coating Technology, vol.185 no.7, pp.92-98, 2004.
[11] P. Zartner, R. Cesenjever, H. Singer and M. Weyand, "First Successful Implantation of a Biodegradable Meta Stent into the Left Pulmonary Artery of a Preterm Baby, Catheter CardoivascInterv, vol. 66, no. 4, pp. 590-595, 2005.
[12] R. A. Goyer, "Toxicity of Metals,” ASM Metals Handbook, vol.2, 1992.
[13] K. U. Kainer, "Magnesium-Alloy and Technologies,” Wiley-VCH Verlag GmbH &Co, Germany, pp.1-184, 2003.
[14] C. H. Turner and D. B. Burr., "Basic Biomechanical Measurements of Bone,” Journal of Biomaterials Engineering, vol. 14, pp. 595-608, 1993.
[15] F. Wittea, J. Fischer, J. Nellesen, H. Crostack and H.A. Crostac, "In vitro and in vivo Corrosion of Magnesium Alloys, Biomaterials, vol.27,no.7, pp. 1013-1018, 2005.
[1] Y. O. Kojima, "Platform Science and Technology for Advance Magnesium Alloys,” Science Forum, pp. 350-35, 2000.
[2] C. L. Liu, Y. C. Xin, and P. R. Chu, "Influence of Heat Treatment on Degradation Behavior of Bio-Degradable Die-Cast AZ63 Magnesium Alloy in Simulated Body Fluid,” Materials Science Engineering A, vol. 456, pp. 350-357, 2007.
[3] E. Zhang, and L. Yang, "Microstructure, Mechanical Properties and Bio-Corrosion Properties of Mg-Zn-Mn-Ca Alloy for Biomedical Application,” Materials Science Engineering A, vol. 497, pp. 111-118, 2008.
[4] M. P. Staiger, A. M. Pietaka, J. Huadamaia and G. Dias, "Magnesium and Its Alloys as Orthopedic Biomaterials, Journal of Biomaterials, vol.27, pp.1728-1734, 2006.
[5] X. Guand and Z. Zheng, "A Review on Magnesium Alloys as Biodegradable Materials,” Materials Science, vol.4, no.2, pp. `111-115, 2010.
[6] M. Niinom and M. Nakai, "Titanium Based Biomaterials for Preventing Stress Shielding between Implant Devices and Bone,” International Journal of Biomaterials, 2011.
[7] Y. Hideki, F. Mikio and C. Akihiko, "Determination of the Mechanical Properties of Extruded Pure Magnesium during Tension–Tension low-Cycle Fatigue Using Ultrasonic Testing,” Materials Transactions, vol.51, no.11, pp. 2025-2032, 2010.
[8] C.K. Seal, K. Vince and M.A. Hodgson, "Biodegradable Surgical Implants Based On Magnesium Alloys – A Review of Current Research, IOP Conf. Series: Materials Science and Engineering, vol.4, pp. 1-4, 2009.
[9] F. Wittea, V. Kaese, H. Switzer, L. A. Meyer, C. J. Wirth and H. Winuag, "In vivo Corrosion of Four Magnesium Alloys and the Associated Response, Biomaterials, vol.26, no.17, pp. 3557-3563.2005.
[10] L. Li, J. Gao and Y. Wang, "Evaluation of Cyto-Toxicity and Corrosion Behavior of Alkali-Heat-Treated Magnesium in Simulated Body Fluid, Surface Coating Technology, vol.185 no.7, pp.92-98, 2004.
[11] P. Zartner, R. Cesenjever, H. Singer and M. Weyand, "First Successful Implantation of a Biodegradable Meta Stent into the Left Pulmonary Artery of a Preterm Baby, Catheter CardoivascInterv, vol. 66, no. 4, pp. 590-595, 2005.
[12] R. A. Goyer, "Toxicity of Metals,” ASM Metals Handbook, vol.2, 1992.
[13] K. U. Kainer, "Magnesium-Alloy and Technologies,” Wiley-VCH Verlag GmbH &Co, Germany, pp.1-184, 2003.
[14] C. H. Turner and D. B. Burr., "Basic Biomechanical Measurements of Bone,” Journal of Biomaterials Engineering, vol. 14, pp. 595-608, 1993.
[15] F. Wittea, J. Fischer, J. Nellesen, H. Crostack and H.A. Crostac, "In vitro and in vivo Corrosion of Magnesium Alloys, Biomaterials, vol.27,no.7, pp. 1013-1018, 2005.
@article{"International Journal of Medical, Medicine and Health Sciences:66613", author = "S. O. Adeosun and O. I. Sekunowo and O. P. Gbenebor and W. A. Ayoola and A. O. Odunade and T. A. Idowu", title = "Mechanical Properties Enhancement of 66/34Mg-Alloy for Medical Application", 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.
", keywords = "Mg-Al alloy, artificial ageing, medical implant, cortical bone, mechanical properties.", volume = "8", number = "2", pages = "109-4", }
