Corrosion Behavior News Today

The microstructures, mechanical properties and corrosion behaviors of the ultra-high strength Al–Zn–Mg–Cu-Sc aluminum alloy fabricated by wire-arc additive manufacturing process using a self-prepared 7B55-Sc filler wire were systematically investigated under different heat treatments. The results showed that the microstructures of the as-deposited, T6, T73, and retrogression and re-aging (RRA) heat treatments were all composed of fine equiaxed grains with a size of about 6.0 μm. The grain...

In this study, the corrosion properties of Ti-6Al-4 V alloys using wire-arc Directed Energy Deposition (DED) with and without different Magnetic Arc Oscillation (MAO) patterns are comparatively evaluated. The relationship between corrosion resistance and microstructural features including grain size, geometrically necessary dislocation (GND), and grain orientation spread (GOS) of as-fabricated specimens are fully explored. The results show that magnetic arc oscillation, including liner arc oscil...

This work utilizes wet–dry cycle corrosion tests to investigate the corrosion behavior of medium manganese steel by analyzing its corrosion kinetics, corrosion phases, surface morphology, cross-section morphology, elemental distribution and electrochemical characteristics. The corrosion process was divided into two stages, and the change is due to the unique transformation of corrosion products. The mixture of β-FeOOH and MnO2 in the corrosion product up to 72 h causes an increase in redox ab...

To further improve the comprehensive service performance of Zn, hot extrusion combined multi-pass equal channel angular pressing route were applied to process Zn-1(wt%)Mg alloy and 1(vol%)β-TCP/Zn-1Mg composites. As-cast cylinders specimens with a diameter of 60 mm were finally processed to the ECAP-processed specimens with the dimensions of 15 mm × 15 mm × 120 mm. The evolution and corresponding mechanism of the microstructure, mechanical properties, corrosion behavior, and biocompatibility ...

In a recent study published in the journal Materials, researchers from Poland analyzed casein as a potential coating material to prevent corrosion of magnesium (Mg)-based alloys when used in orthopedic implants.