Microstructure, corrosion behavior and hydrogen evolution of USSP processed AZ31 magnesium alloy with a surface layer containing amorphous Fe-rich composite
- Resource Type
- Authors
- Jianyue Zhang; Huabing Li; Shuai Wang; Qingqing Sun; Jinhua Han; Bin Lin
- Source
- International Journal of Hydrogen Energy. 46:10172-10182
- Subject
- Materials science
Renewable Energy, Sustainability and the Environment
Composite number
Energy Engineering and Power Technology
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Microstructure
01 natural sciences
Nanocrystalline material
0104 chemical sciences
Corrosion
Amorphous solid
Fuel Technology
Surface layer
Magnesium alloy
Composite material
0210 nano-technology
Nanoscopic scale
- Language
- ISSN
- 0360-3199
The influence of ultrasonic shot peening (USSP) treatment on the microstructure, corrosion behavior and hydrogen evolution of AZ31 magnesium alloy is investigated. An Fe-rich composite in amorphous state is introduced on the surface layer. Microstructure results indicate that nanoscale grains are formed on the surface layer after USSP treatment. Comparing to the untreated AZ31, the charge transfer resistance of the USSP-treated sample decreases by ~410 times and the hydrogen evolution rate increases by ~64 times. The acceleration of corrosion rate is attributed to the micro-galvanic interaction between the nanocrystalline Mg matrix and amorphous Fe-rich composite.