Effects of Shot-peening on the mechanical properties of extruded Mg/۲.۵%HA biocomposite

Magnesium is an appropriate material to use in biomedical applications due to its similar properties to humanbone and its biocompatibility. Shot-peening can enhance the mechanical properties of magnesium-based materials,including their surface hardness. In this research, the extruded ۲.۵% Hydroxyapatite reinforced Mg composite sampleswere shot-peened by ۴۰۰ μm glass beads at ۰.۵ mmN Almen arc height. The effect of shot-peening on the surfacehardness and roughness was studied. Furthermore, the tensile and compressive properties of the shot-peenedMg/۲.۵%HA composites were evaluated. The results revealed that shot-peening increases surface hardness androughness. Furthermore, uniaxial tensile and compressive tests indicate an increase in tensile fracture strain,compressive yield, and ultimate stresses.

کلیدواژه ها:

Shot-peening ، Surface modification ، Magnesium composite ، Hydroxyapatite