Deformation induced martensite characteristics in Fe-29Ni-2Mn alloy

Gueler E., Aktas H.

Materials Science and Technology, cilt.24, sa.10, ss.1204-1208, 2008 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 24 Sayı: 10
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1179/174328407x161303
  • Dergi Adı: Materials Science and Technology
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1204-1208
  • Anahtar Kelimeler: FeNiMn, SEM, TEM, DSC, Mossbauer spectroscopy, martensite, NI-MN ALLOYS, STRAIN-INDUCED MARTENSITE, STATIC MAGNETIC-FIELD, FE-NI, C ALLOYS, HYDROSTATIC-PRESSURE, FE-17.1-PERCENT-NI-0.81-PERCENT-C ALLOY, TRANSFORMATIONS, MORPHOLOGY, MOSSBAUER
  • Ankara Hacı Bayram Veli Üniversitesi Adresli: Hayır

Özet

Deformation induced martensite characteristics in the austenite phase of Fe-29Ni-2Mn alloy were studied for different austenite grain sizes of alloy. Scanning electron microscopy, transmission electron microscopy, Mössbauer spectroscopy and also differential scanning calorimetry techniques were applied to study in order to clarify the deformation induced martensite characteristics from morphological, crystallographical, magnetical and thermal points of view. Scanning electron microscope revealed that the increasing of deformation amount also increased the amount of existed martensite. Transmission electron microscope observations showed that the crystal structure of these deformation induced martensites morphology was lenticular plates with a bcc crystal structure. Also the magnetism of both austenite and martensite phases were determined with Mössbauer spectroscopy. Mössbauer spectrometer measurements showed paramagnetic character for austenite phases and ferromagnetic character for martensite phases in all samples. According to obtained differential scanning calorimetry cooling curves, deformation induced martensite start temperature Md was found to be higher (-128°C) for larger grained samples than for smaller grained samples (-135°C). © 2008 Institute of Materials, Minerals and Mining.