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Mössbauer study of the hydrogen induced martensitic transformation in high carbon Fe−C martensite and its ageing behaviour

  • Metals and Alloys
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Abstract

Cathodic hydrogen charging at low current density at room temperature in acidic medium is carried out on an austenitic 1.9 wt% C iron alloy. This induces the martensitic transformation as checked by Mössbauer spectroscopy and the spectra observed at room temperature present all the features of an already aged martensite. Further ageing at higher temperatures up to 390 K clearly demonstrates that the ageing kinetics is stopped compared to that of uncharged martensite of a similar alloy. Further, in situ transformation of extended multiplets into ε-η carbide precipitates resumes at the same temperature in both cases.

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References

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Authors and Affiliations

  1. ESSTIN, Département Sciences des Matériaux, Laboratoire de Spectrométrie Mössbauer-CNRS Maurice Letort, Université de Nancy I, Parc R. Bentz, F 54500, Vandoeuvre-Nancy, France

    O. N. C. Uwakweh, Ph. Bauer & J. M. R. Genin

Authors
  1. O. N. C. Uwakweh
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  2. Ph. Bauer
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  3. J. M. R. Genin
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Uwakweh, O.N.C., Bauer, P. & Genin, J.M.R. Mössbauer study of the hydrogen induced martensitic transformation in high carbon Fe−C martensite and its ageing behaviour. Hyperfine Interact 54, 877–881 (1990). https://doi.org/10.1007/BF02396143

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  • DOI: https://doi.org/10.1007/BF02396143

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