|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advanced Functional and Structural Thin Films and Coatings
||Effects of Femtosecond Laser Shock Peening on the Tribocorrosion Resistance of Biodegrade WE43 Magnesium Alloys
||Wenbo Wang, Chang-Yu Hung, Leslie Howe, Jia Chen, Kaiwen Wang, Vinh X. Ho, Shannon Lenahan, Mitsuhiro Murayama, Nguyen Q. Vinh, Wenjun Cai
|On-Site Speaker (Planned)
Magnesium (Mg) alloys are promising candidates for use as degradable implant materials. However, the fast degradation of Mg alloys in physiological environments makes it challenging to ensure structural integrity over the required time for tissue and bone healing. On the other hand, high surface friction and wear debris formation in load-bearing implants can produce an undesirable inflammatory reaction. Hence, an effective method that simultaneously optimizes the wear and corrosion resistance, i.e., tribocorrosion resistance of Mg alloys is needed. In this study, the effects of femtosecond laser shock peening (fs-LSP) on the tribocorrosion properties of WE43 Mg alloys were investigated in stagnant blood bank buffered saline under 37 °C. Materials characterization via transmission electron microscope are combined with finite element simulations to reveal the underlying structural evolutions and residual stress generations during fs-LSP, which were responsible for the enhanced tribocorrosion resistance of WE43 Mg alloys.
||Biomaterials, Magnesium, Surface Modification and Coatings