@Article{jrm.2023.023849,
AUTHOR = {Mengqi Cong, Yang Zhang, Yunlong Zhang, Xiao Liu, Yalin Lu, Xiaoping Li},
TITLE = {Tensile Properties and Wear Resistance of Mg Alloy Containing High Si as Implant Materials},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {11},
YEAR = {2023},
NUMBER = {4},
PAGES = {1977--1989},
URL = {http://www.techscience.com/jrm/v11n4/50674},
ISSN = {2164-6341},
ABSTRACT = {Magnesium alloy has been considered as one of the third-generation biomaterials for the regeneration and support of functional bone tissue. As a regeneration implant material with great potential applications, in-situ Mg<sub>2</sub>Si phase reinforced Mg-6Zn cast alloy was comprehensively studied and expected to possess excellent mechanical properties via the refining and modifying of Mg<sub>2</sub>Si reinforcements. The present study demonstrates that the primary and eutectic Mg<sub>2</sub>Si phase can be greatly modified by the yttrium (Y) addition. The size of the primary Mg<sub>2</sub>Si phases can be reduced to ~20 μm with an addition of 0.5 wt.% Y. This phenomenon is mainly attributed to the poisoning effect of the Y element. Moreover, wear resistance and tensile properties of the ternary alloy have also been improved by the Y addition. Mg-6Zn-4Si-0.5Y alloy exhibits optimal tensile properties and wears resistance. The ultimate tensile strength and the elongation of the alloy with 0.5 wt.% Y are 50% and 65% higher than those of the ternary alloy, respectively. Excessive Y addition (1.0 wt.%) deteriorates the tensile properties of Mg-Zn-Si alloy. The improvement of the tensile properties is mainly due to the modification of primary and eutectic Mg<sub>2</sub>Si phases as well as the solid solution strengthening of the Y atoms. This study provides a certain implication for the application of Mg-Zn-Si alloys containing Y elements as regeneration implants.},
DOI = {10.32604/jrm.2023.023849}
}