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Mössbauer and electron microscopy study of martensitic transformations in an Fe-Mn-Mo alloy

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Abstract

The kinetic, morphological, crystallographic, and magnetic characteristics of thermally induced martensites in Fe-13.4wt% Mn-5.2wt% Mo alloy were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Mössbauer spectroscopy. The experimental results reveal that two types of thermal-induced martensites, ɛ (hcp) and α′ (bcc) martensites, are formed in the as-quenched condition, and these transformations have athermal characters. Mo addition to the Fe-Mn alloy does not change the coexistence of ɛ and α′ martensites with the Mn content between 10wt% and 15wt%. Besides, Mössbauer spectra reveal a paramagnetic character with a singlet for the γ (fcc) austenite and ɛ martensite phases and a ferromagnetic character with a broad sextet for the α′ martensite phase. The volume fraction of α′ martensite forming in the quenched alloy is much more than that of the ɛ martensite.

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Authors and Affiliations

  1. Department of Computer Education and Instructional Technology, Kırıkkale University, Kırıkkale, 71450, Turkey

    T. Kırındı & U. Sarı

  2. Institute of Sciences, Kırıkkale University, Yahşihan Campus, Kırıkkale, 71450, Turkey

    M. Kurt

Authors
  1. T. Kırındı
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  2. U. Sarı
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  3. M. Kurt
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Correspondence to T. Kırındı.

Additional information

This study was financially supported by the Kırıkkale University Scientific Research Fund (Nos.2008/34 and 2008/35).

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Kırındı, T., Sarı, U. & Kurt, M. Mössbauer and electron microscopy study of martensitic transformations in an Fe-Mn-Mo alloy. Int J Miner Metall Mater 17, 448–452 (2010). https://doi.org/10.1007/s12613-010-0339-z

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  • DOI: https://doi.org/10.1007/s12613-010-0339-z

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