Comparison of Hot-rolled Unalloyed Magnesium and Magnesium Alloys in terms of Biodegradability and Mechanical Properties

A İncesu, A Güngör - Gazi University Journal of Science, 2021 - dergipark.org.tr
A İncesu, A Güngör
Gazi University Journal of Science, 2021dergipark.org.tr
In this study, hot rolling is properly performed on pure magnesium and two of Zn, Ca and Mn
containing magnesium alloys. Biodegradability and mechanical properties are investigated
comparatively in their rolled state. While the average grain sizes of the two alloys were close
to each other, it was observed that the Mg-1.01 Zn-1.63 Ca-0.30 Mn alloy had higher
hardness (61.5±0.2 HV) at hot rolled state. The lowest corrosion rate in electrochemical
corrosion test on Mg-1.07 Zn-0.21 Ca-0.31 Mn alloy is observed to be 1.772 mm/yr. As for …
In this study, hot rolling is properly performed on pure magnesium and two of Zn, Ca and Mn containing magnesium alloys. Biodegradability and mechanical properties are investigated comparatively in their rolled state. While the average grain sizes of the two alloys were close to each other, it was observed that the Mg-1.01Zn-1.63Ca-0.30Mn alloy had higher hardness (61.5 ± 0.2 HV) at hot rolled state. The lowest corrosion rate in electrochemical corrosion test on Mg-1.07Zn-0.21Ca-0.31Mn alloy is observed to be 1.772 mm/yr. As for the immersion corrosion test on the same alloy, the lowest corrosion rate is detected to be 0.054 mm/yr. Moreover, Mg-1.07Zn-0.21Ca-0.31Mn alloy has the highest tensile strength. Based on the results, it is ascertained that hot-rolled Mg-1.07Zn-0.21Ca-0.31Mn alloy possesses a better biodegradability and mechanical properties compared to hot rolled commercially unalloyed Mg and 1.01Zn-1.63Ca-0.30Mn alloy.
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