Title

Three dimensional microstructure study of oxide scale formed on a high-speed steel by means of SEM, FIB and TEM

RIS ID

38364

Publication Details

Zhu, Q., Zhu, H. T., Tieu, A. K. and Kong, C. (2011). Three dimensional microstructure study of oxide scale formed on a high-speed steel by means of SEM, FIB and TEM. Corrosion Science, 53 (11), 3603-3611.

Abstract

Characteristics of the oxide scale formed on a high-speed steel (HSS) material in the temperature range 550–650 °C were examined. The surface morphologies of oxidised sample indicate that the temperature has a significant influence on the oxidation behaviour of the HSS samples. Differential oxidation is expected to occur due to high-alloyed components in the material. The carbide-free matrix has a good oxidation resistance due to the dissolved chromium; while vanadium rich carbide (MC) regions were oxidised heavily because of high free energy at the carbide/matrix interface and low thermal stability of the MC carbides. FIB/TEM cross-section observation shows that the oxide scale formed on the surface has a duplex-layer structure with vanadium oxides covering the top of the scale.

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Link to publisher version (DOI)

http://dx.doi.org/10.1016/j.corsci.2011.07.004