Mössbauer studies on athermal martensite formation in an Fe-Ni-Mn alloy

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Aydin A., Guler E., Aktas H., Gungunes H.

Bulletin of Materials Science, vol.25, no.5, pp.359-360, 2002 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 5
  • Publication Date: 2002
  • Doi Number: 10.1007/bf02708009
  • Journal Name: Bulletin of Materials Science
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.359-360
  • Keywords: austenite-martensite, Mossbauer spectroscopy, scanning electron microscopy, isomer shift, TRANSFORMATIONS
  • Ankara Haci Bayram Veli University Affiliated: No

Abstract

In this study, austenite-martensite phase transformations which are formed by cooling effect in Fe-30% Ni-0-2% Mn alloy are investigated with Mössbauer spectroscopy and scanning electron microscopy. The single peak of the paramagnetic phase and the six peaks of the ferromagnetic phase of Fe-30% Ni-0.2% Mn alloy were observed in the Mössbauer spectrum. The internal magnetic field strength of ferromagnetic martensite phase was determined as 33.8 T and the isomer shift values were determined as - 0.11 mm.sec-1 and - 0.06 mm.sec-1, respectively, for the austenite and martensite phases. In this alloy, athermal transformation was observed. The results obtained are in agreement with literature.