Abstract
The microstructure, mechanical, and corrosion properties of extruded low-alloyed Mg-xZn-0.2Ca (x = 0,1.0,2.0, 3.0) alloys were investigated in this study. Findings from scanning electron microscope, X-ray diffraction and transmission electron microscopy results indicate that the amount of ternary Ca2Mg6Zn3 phase, as the only secondary phase in 1.0Zn, 2.0Zn, and 3.0Zn alloys, gradually increases with the addition of Zn, while the Mg2Ca phase was observed in the Mg-0.2Ca alloy only. Zn has a strong effect on the orientation and intensity of textures, which also influence mechanical behaviors, as revealed by electron back-scatter diffraction. Among all the alloys, the Mg-2.0Zn-0.2Ca alloy obtains the maximum tensile strength (278 MPa) and yield strength (230 MPa). Moreover, Zn addition has an evident influence on the corrosion properties of Mg-xZn-0.2Ca alloy, and Mg-l.0Zn-0.2Ca alloy exhibits the minimum corrosion rate. This paper provides a novel low-alloyed magnesium alloy as a potential biodegradable material.
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Acknowledgements
The Major State Research and Development Program of China (No. 2016YFB0300801), the National Natural Science Foundation of China (Nos. 51671017 and 51971020), the Fundamental Research Funds for the Central Universities (No. FRF-IC-19-010), Beijing Laboratory of Metallic Materials and Processing for Modern Transportation, the fund of the State Key Laboratory of Solidification Processing in NWPU (No. SKLSP201835), and the Opening Research Fund of State Key Laboratory for Advanced Metals and Materials (2018-Z04) are deeply appreciated for their financial support.
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Ma, Yz., Yang, Cl., Liu, Yj. et al. Microstructure, mechanical, and corrosion properties of extruded low-alloyed Mg-xZn-0.2Ca alloys. Int J Miner Metall Mater 26, 1274–1284 (2019). https://doi.org/10.1007/s12613-019-1860-3
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DOI: https://doi.org/10.1007/s12613-019-1860-3