Correlation of seawater corrosion and processing of Cu-Ni alloy tubes

摘要

The investigations on the effect of the initial surface and microstructure on the seawater corrosion of Cu-Ni al- loy tubes were carried out by processing, electrochemical methods and natural seawater exposure as well as SEM. Defor- mation has more impact on the final microstructure of the tubes than the annealing time did, and at the deformation of 32/100 and annealing temperature 550-～600deg C for 1 h the tubes was completely recrystallized microstructure. As increasing the volume fraction of recrystallization, the homogeneity of microstructure and the corrosion resistance increased.