Abstract
Conversion electron Mössbauer spectra revealed that the uppermost surface layer of a carburized and quenched steel was almost γ-austenite and that the surface layer of this sample consisted of α′-martensite and γ-austenite. Iron carbide was expected to have been formed in the surface layer of a carburized and annealed steel but, in fact, no iron carbide could be recognized in the sample. This may be due to the de-carburization or the re-diffusion of carbon into the steel. However, conclusive evidence supporting this explanation was not obtained.
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Handa, A., Ujihira, Y. & Okabe, I. Layer-by-layer analysis of the chemical state of iron in carburized steel surfaces by conversion electron Mössbauer spectrometry. J Mater Sci 16, 1999–2002 (1981). https://doi.org/10.1007/BF00540649
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DOI: https://doi.org/10.1007/BF00540649