Investigation of oxidation behavior and evolvement of grain morphology of Fe-Cr-Al alloy at 1200℃ and 1300℃

In this paper, the development of surface oxide scale and the evolvement of spallation mechanism of Fe-21Cr-5.6Al super alloy was investigated at 1200℃ and 1300℃.The oxidation kinetic curves were obtained by isothermally measuring the weight gain of alloy oxidized with different time duration. The morphology of oxide scale and grain structure was observed through SEM/EDX, and the phase structure was analyzed by XRD. The results show that the oxidation process followed the parabolic law and a higher oxidation rate was achieved at 1300℃. # #        ###       #####          ######################################### # # # # # # #  # # # # #