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The formation of martensite in splat-quenched Fe-Mn and Fe-Ni-C alloys

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Abstract

A two-piston splat-quenching technique has been used to prepare splat-quenched Fe-Mn alloys with 0 to 20 wt % Mn, and splat-quenched Fe-Ni-C alloys with a nominal carbon content of 0.1 wt % and 0 to 40 wt % Ni. The resulting alloy microstructures have been investigated by a combination of optical and scanning electron microscopy, X-ray diffractometry, and microhardness testing; and the splat-quenched structures have been compared with the microstructures of similar alloys prepared by conventional solid-state quenching. In both alloy systems, splat-quenching produces a very small as-solidified austenite grain size, and a depression of the martensite transformation temperature as shown by an increased tendency to retain austenite to low temperatures. Because of the combination of a small austenite grain size and, therefore, fine scale martensite structure, splat-quenched martensitic alloys of Fe-Mn and Fe-Ni-C exhibit very high microhardness values.

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Authors and Affiliations

  1. School of Engineering and Applied Sciences, University of Sussex, Sussex, UK

    Y. Inokuti & B. Cantor

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  1. Y. Inokuti
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  2. B. Cantor
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Inokuti, Y., Cantor, B. The formation of martensite in splat-quenched Fe-Mn and Fe-Ni-C alloys. J Mater Sci 12, 946–958 (1977). https://doi.org/10.1007/BF00540977

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  • DOI: https://doi.org/10.1007/BF00540977

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