Influence of Rolling on Corrosion Behavior of ZM5 Mg-alloy
The corrosion performance and microstructure of ZM5 Mg-alloy before and after rolling were comparatively studied by hydrogen evolution measurement,mass loss method,electrochemical im-pedance spectroscopy(EIS),dynamic potential polarization measurement,XRD and SEM.The electron work function of different microstructures was numerically simulated through first principle analysis.The results show that rolling causes an obvious preferred orientation for ZM5 Mg-alloy.The corrosion mass loss and hydrogen evolution of ZM5 Mg-alloy decrease significantly after rolling,while the polarization re-sistance increases obviously.These all indicated that the corrosion resistance of the rolled ZM5 Mg-alloy is better than that of the cast one.The simulation results show that the rearrangement of α-phase enhanc-es the electronic work function of the Mg-alloy.
Mg-alloyrollingcorrosion behaviorfirst-principleselectron work function
NETL
NSTL
万方数据
维普
