SILVA, R.ARANA, C.MALAFAIA, A.M. de S.MENDES FILHO, A.A.PASCAL, C.OTUBO, J.SORDI, V.L.ROVERE, C.A.D.2019-12-182019-12-182019SILVA, R.; ARANA, C.; MALAFAIA, A.M. de S.; MENDES FILHO, A.A.; PASCAL, C.; OTUBO, J.; SORDI, V.L.; ROVERE, C.A.D. Microstructure and surface oxidation behavior of an austenitic Fe-Mn-Si-Cr-Ni-Co shape memory stainless steel at 800 °C in air. <b>Corrosion Science</b>, v. 158, p. 1-10, 2019. DOI: <a href="https://dx.doi.org/10.1016/j.corsci.2019.108103">10.1016/j.corsci.2019.108103</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/30453.0010-938Xhttp://repositorio.ipen.br/handle/123456789/30453In the present research, the microstructure and oxidation behavior of an Fe-8.26Mn-5.25Si-12.80Cr-5.81Ni- 11.84Co shape memory stainless steel (SMSS) was studied at 800 °C in air for up to 120 h. Phase changes and oxidation mechanism were discussed based on microscopy analyses, thermogravimetric measurements and thermodynamic simulations. The results show that oxidation exposure promotes the formation of the σ, χ and ferrite phases in the metallic substrate. The oxidation behavior follows a parabolic law, with the kinetics of oxidation being controlled by the Mn2O3 oxide growth in the first hours, and by Mn3O4 and MnCr2O4 spinel growth after 24 h of exposure.1-10openAccessmicrostructureoxidationstainless steelsshape memory effecttemperature range 0400-1000 kscanning electron microscopytransmission electron microscopyoptical microscopythermodynamicssimulationthermal gravimetric analysisArtigo de periódico15810.1016/j.corsci.2019.10810389.26293.00