SCC-resistant in seawater
Trace-Mg treatment forms core-shell inclusions and induces acicular ferrite in the steel, markedly enhancing the resistance to stress corrosion cracking of X70 base material and heat-affected zones in seawater.
Yang, Guangming · Tianjie, Huang · Sun, Baozhuang · Yinsen, Wang · Chao, Liu · Huang, Feng · Liu, Zhiyong · Cuiwei, Du · Li, Xiaogang
Corrosion Science 2026
Improves SCC resistance of base material and HAZ microstructures
Promotes formation of MgO·Al2O3 core-shell inclusions
Induces acicular ferrite and increases high-angle grain boundary fraction
Inhibits anodic/cathodic reactions, enhances rust layer stability, and increases charge transfer resistance