In the present study, the fatigue crack propagation (FCP) behaviors of Fe24Mn (Fe-24Mn-4Cr) in various environments were examined in the different locations of base metal (BM), weld metal (WM) and fusion line (FL) at 298 and 110K and in artificial sea...
In the present study, the fatigue crack propagation (FCP) behaviors of Fe24Mn (Fe-24Mn-4Cr) in various environments were examined in the different locations of base metal (BM), weld metal (WM) and fusion line (FL) at 298 and 110K and in artificial seawater under various cathodic protection potentials. The FCP rates of Fe24Mn BM specimen was substantially reduced with decreasing temperature from 298 to 110K over the entire ?K regime. The CP potential of -850 and -1,050 mVSCE suppressed the environmental effect of seawater on the FCP behavior of Fe24Mn BM and WM specimens, showing almost identical da/dN-?K curves for both air and seawater environments. The FCP behaviors of Fe24Mn in various environments were discussed based on the microstructural and the fractographic observations.