Microstructure of the coating and mechanical properties of galvanized chromium-rich martensitic steel

►The coating is bright and continuous. The intermetallic layer is made of ς grains. ►Galvanizing levels the corrosion potential of the Cr-rich steel on multigrade parts. ►Al and Ni moderate the Sandelin effect. Cr shares in ς and η. Sn segregates at GB. ►Galvanizing preserves mechanical behaviour and fatigue toughness. ►Static loading and security purpose best benefit for lightweight reduction.