The Magnetic Aspects of the γ-α and γ-ε Martensitic Transformations in Fe-Mn Alloys
- M. Acet
- T. Schneider
- B. Gehrmann
- E.F. Wassermann
DOIAbstract
Fe100-xMnx alloys undergo fcc-bcc (γ-α) and fcc-hcp (γ-ε) transformations for about 0<x<10 at % and 15<x<30 at% respectively. The product phase in the region 10<x<15 at. % is mixed α+ε and ε+γ. The γ-α transformation in Fe-Mn is similar to that in Fe-rich Fe-Ni alloys where the transformation takes place between a high-temperature dense fcc structure and a low-temperature more open bcc structure. This anomalous volume increase at the martensite transformation temperature is closely related to short-range ferromagnetic correlations in the fcc and bcc states. The γ-ε transformation in Fe-Mn takes place between a high-temperature fcc structure and a relatively denser packed low-temperature hcp structure. In this case there is no anomalous volu...
Add to ORKG