Print Email Facebook Twitter Prediction of oxide phases formed upon internal oxidation of advanced high-strength steels Title Prediction of oxide phases formed upon internal oxidation of advanced high-strength steels Author Mao, W. (TU Delft (OLD) MSE-1; Material Innovation Institute (M2i)) Sloof, W.G. (TU Delft (OLD) MSE-1) Hendrikx, R.W.A. (TU Delft (OLD) MSE-1) Date 2017 Abstract The effect of Cr on the oxidation of Fe–Mn-based steels during isothermal annealing at different dew points was investigated. The Fe–Mn–Cr–(Si) phase diagrams for oxidizing environments were computed to predict the oxide phases. Various Fe–Mn steels with different concentrations of Cr and Si were annealed at 950 °C in a gas mixture of Ar or N2 with 5 vol% H2 and dew points ranging from − 45 to 10 °C. The identified oxide species after annealing match with those predicted based on the phase diagrams. (Mn,Fe)O is the only oxide phase formed during annealing of Fe–Mn binary steel alloys. Adding Cr leads to the formation of (Mn,Cr,Fe)3O4 spinel. The dissociation oxygen partial pressure of (Mn,Cr,Fe)3O4 in the Fe–Mn–Cr steels is lower than that of (Mn,Fe)O. The Si in the steels results in the formation (Mn,Fe)2SiO4, and increasing the Si concentration suppresses the formation of (Mn,Cr,Fe)3O4 and (Mn,Fe)O during annealing. Subject Advanced high-strength steelsAnnealingOxidationThermodynamics To reference this document use: http://resolver.tudelft.nl/uuid:e84d568b-395f-4911-af2c-4a106677b891 DOI https://doi.org/10.1007/s11085-017-9815-4 ISSN 0030-770X Source Oxidation of Metals, 89 (June 2018) (5-6), 531-549 Part of collection Institutional Repository Document type journal article Rights © 2017 W. Mao, W.G. Sloof, R.W.A. Hendrikx Files PDF 10.1007_s11085_017_9815_4.pdf 2.77 MB Close viewer /islandora/object/uuid:e84d568b-395f-4911-af2c-4a106677b891/datastream/OBJ/view