Effect of severe plastic deformation and post-annealing on the mechanical properties and bio-corrosion rate of AZ31 magnesium alloy
| Autor: | Ming Jen Tan, Bryan Shi Jie Bin, Kai Soon Fong, Yong Teck Tan |
|---|---|
| Přispěvatelé: | School of Materials Science & Engineering, School of Mechanical and Aerospace Engineering, A*STAR SIMTech |
| Rok vydání: | 2017 |
| Předmět: |
Fine grain
Materials science Annealing (metallurgy) 020502 materials Metallurgy Potentiodynamic polarization 02 engineering and technology General Medicine 021001 nanoscience & nanotechnology Corrosion Engineering::Materials [DRNTU] Metal Post annealing 0205 materials engineering visual_art visual_art.visual_art_medium Severe Plastic Deformation Severe plastic deformation Magnesium alloy 0210 nano-technology |
| Zdroj: | Procedia Engineering. 207:1475-1480 |
| ISSN: | 1877-7058 |
| DOI: | 10.1016/j.proeng.2017.10.916 |
| Popis: | In this work, the effect of fine grain sizes on the mechanical and bio-corrosion properties of AZ31 magnesium alloy was studied. Bio-corrosion refers to the accelerated degradation of metal within the human body. Fine-grained (~1.5 µm) AZ31 was obtained through Severe Plastic Deformation (SPD) via three cycles of Constrained Groove-Pressing (CGP) under elevated temperature. The effects of CGP and post-annealing (at 473 K for 15 and 30 min) on bio-corrosion were preliminarily investigated by potentiodynamic polarization measurements and constant immersion tests. Results obtained show that the as-processed samples with annealing exhibited improvements in yield strength and ductility while the bio-corrosion rate in Hank’s solution remains fairly similar during the early stage. ASTAR (Agency for Sci., Tech. and Research, S’pore) Published version |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|