Journal of Materials Science

, Volume 17, Issue 12, pp 3479–3483 | Cite as

Mössbauer study of martensitic transformations in an Fe-29.6% Ni alloy

  • I. Akgün
  • A. Gedikoglu
  • T. N. Durlu


The application of an external stress may form “band” shaped strain-induced martensites in the austenite structure of Fe alloys. Mössbauer spectroscopy and transmission electron microscopy techniques were used to clarify certain properties of strain-induced martensite in an Fe-29.6% Ni alloy. The reverse transformation mechanism between thermal plate martensite and the matrix austenite was also studied. Mössbauer spectroscopy made it possible to examine the same area of the austenitic thin foils during theγ→α→γ thermal cycles, and the volume fraction changes were determined. The habit plane and orientation relationship of strain-induced martensite were measured from the electron diffraction patterns and the latter parameter was found to be K-S type as with thermal plate martensites of the Fe-Ni alloys. The isomery shifts caused by the deformation and cycling procedures were also calculated for both austenite and martensite structures and the hyperfine magnetic field parameter of Fe-29.6% Ni strain-induced martensite was found to be equal to that of Fe-Ni-C alloys reported earlier.


Austenite Martensite Martensitic Transformation Orientation Relationship Electron Diffraction Pattern 
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Copyright information

© Chapman and Hall Ltd. 1982

Authors and Affiliations

  • I. Akgün
    • 1
  • A. Gedikoglu
    • 1
  • T. N. Durlu
    • 1
  1. 1.Department of Physics, Faculty of ScienceAnkara UniversityBeşevler, AnkaraTurkey

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