Multi-degradation behavior of austenitic and super duplex stainless steel - The effect of 4-point static and cyclic bending applied to a simulated seawater tribocorrosion system

► Test results show significant synergy effects of tribocorrosion and cyclic strain interaction. ► Multi-degradation testing of 25% Cr duplex stainless steel and plain austenitic stainless steel. ► Distinct micro-structural changes are identified at cyclic loaded tribocorrosion tests. ► Volume loss is affected by stress intensity (Ka) and number of bending cycles/frequency. ► Results are in accordance to proposed multi-degradation mechanism and mathematical model work.