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In Vitro Degradation Behavior of Ti-Microalloyed AZ31 Magnesium Alloy in Simulated Body Fluid

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Abstract

Corrosion and corrosion-related mechanical behaviors of Ti-microalloyed AZ31 Mg alloy (AZ31Ti) in simulated body fluid (SBF) under a dynamic environment were investigated. AZ31 Mg alloy was used as a control alloy. Microstructure analysis of the samples was performed by using a scanning electron microscope and an x-ray diffractometer. Mass loss measurements and corrosion-related tensile tests were carried out by immersing the samples in the SBF solution at \(37.5 \pm 0.5\) °C for 24, 72, and 336 h under dynamic conditions. Potentiodynamic polarization and electrochemical impedance spectroscopy measurements were also employed in the SBF solution at \(37.5 \pm 0.5\) °C. Microstructural studies showed that the β (\({\text{Mg}}_{17} {\text{Al}}_{12}\)) intermetallic phases in the AZ31 alloy are dispersed in the microstructure and formed as relatively angular particles, and that the dimensions of the β phases transformed to a smaller size and globular form with Ti microalloying. While the tensile strength and hardness values of AZ31 and AZ31Ti alloys were similar to each other, Ti microalloying showed a considerable increase in the yield strength and elongation. This study suggests that microalloying of AZ31 alloy with Ti is beneficial in terms of their corrosion resistance and corrosion-related mechanical properties in an SBF environment under dynamic conditions.

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Acknowledgments

This work has been funded by Bilecik Seyh Edebali University, Grant No: 2018-01.BŞEU.03-02. The authors would like to thank Fethi Candan for construction of the real-time dynamic corrosion test apparatus.

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Authors and Affiliations

  1. Department of Biomedical Engineering, Engineering Faculty, Necmettin Erbakan University, 42090, Meram, Konya, Turkey

    S. Candan

  2. Department of Mechanical Engineering, Bilecik Seyh Edebali University, Bilecik, Turkey

    S. Emir

  3. Department of Metallurgy and Materials Engineering, Engineering Faculty, Necmettin Erbakan University, Konya, Turkey

    E. Candan

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Candan, S., Emir, S. & Candan, E. In Vitro Degradation Behavior of Ti-Microalloyed AZ31 Magnesium Alloy in Simulated Body Fluid. J. of Materi Eng and Perform 31, 1–10 (2022). https://doi.org/10.1007/s11665-021-06142-z

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