M(o)ssbauer and electron microscopy study of martensitic transformations in an Fe-Mn-Mo alloy |
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Authors: | TKirindi USari MKurt |
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Affiliation: | [1]Department of Computer Education and Instructional Technology, Klnkkale University, Klnkkale 71450, Turkey [2]Institute of Sciences, Kinkkale University, Yahsihan Campus, Kinkate 71450, Turkey |
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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 M(o)ssbauer spectroscopy.The experimental results reveal that two types of thermal-induced martensites,ε(hcp)and αˊ(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 ε and αˊ martensites with the Mn content between 10wt% and 15wt%.Besides,M(o)ssbauer spectra reveal a paramagnetic character with a singlet for the γ(fcc)austenite and ε martensite phases and a ferromagnetic character with a broad sextet for the αˊ martensite phase.The volume fraction of αˊmartensite forming in the quenched alloy is much more than that of the ε martensite. |
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Keywords: | Fe-Mn alloy molybdenum martensitic transformation scanning electron microscopy(SEM) transmission electron microscopy(TEM) M(o)ssbauer spectroscopy |
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