Microstructure, mechanical and bio-corrosion properties of Mg–Zn–Zr alloys with minor Ca addition. Issue 1 (2nd January 2017)

• Record Type: Journal Article
• Authors: Wang, L.; Li, J. B.; Li, L.; Nie, K. B.; Zhang, J. S.; Yang, C. W.; Yan, P. W.; Liu, Y. P.; Xu, C. X.
• Is Part Of: Materials science and technology. Volume 33:Issue 1(2017)
• Page Start: 9
• Page End: 16
• Publication Date: 2017-01-02
• Subjects: Magnesium alloy -- Calcium -- Microstructure -- Mechanical property -- Corrosion behaviour; Materials science -- Periodicals; Microstructure -- Periodicals; Metallurgy -- Periodicals; 620.1105
• DOI: 10.1080/02670836.2016.1152348
• Languages: English
• ISSNs: 0267-0836

Abstract

Abstract : In this research, effect of minor alloying element Ca on microstructure, mechanical and bio-corrosion properties of as-cast Mg–3Zn–0.3Zr–xCa ( x = 0, 0.3, 0.6, 0.9) alloys were investigated for biomedical application. The result showed that Ca played a dual role in mechanical properties and corrosion resistance. With minor Ca addition, the microstructure of the alloy is significantly refined and more uniform. The elongation, tensile strength and corrosion resistance of the studied alloys increases and then decreases with the increase of Ca content. With increasing the Ca content to 0.6 wt-%, the new strip phase of Ca2 Mg6 Zn3 can be found, and gives the best strength and corrosion resistance. It was thought that the alteration of the second phase and the microstructure affect the mechanical and bio-corrosion properties.