Tailoring surface characteristics of bioabsorbable Mg-Zn-Dy alloy using friction stir processing for improved wettability and degradation behavior

Magnesium (Mg) and its alloys are currently under consideration for use as temporary implants. However, early degradation maintaining mechanical integrity is a significant concern. Surface modification techniques used to improve corrosion properties of Mg based alloys. In the present study, friction stir processing (FSP) was tailor surface characteristics Mg-1Zn-2Dy (wt.%) alloy implant applications. The FSPed characterized using EBSD understand influence FSP on crystallographic texture, grain size boundaries thereby their effect corrosion, wettability hardness. Results showed that zone (SZ) refined less than 3 μm, result dynamic recrystallization (DRX) during exhibited better as-cast alloy. An increase in hardness (11.7%) elastic modulus (6.84%) were also observed. Electrochemical weight loss methods conducted Dulbecco's Modified Eagle's Medium (DMEM) with, 10% Fetal Bovine Serum (FBS) physiological solution. lower rate (0.72 mm/yr) has been attributed fine grains evenly distributed secondary phase particles. Further, boundary texture behavior have investigated.