Magnetic transitions and the magnetic characteristics of the martensitic transformations in A Fe-Mn-Co Alloy
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Tarih
2012
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, the magnetic transitions and the magnetic characteristics of the thermally induced martensitic transformations in Fe-13.2%Mn-5.3%Co alloy have been investigated. The microstructure analysis of difusionless phase transformations forming in the alloy were performed by scanning electron microscopy (SEM), and the magnetic properties were revealed by Mössbauer spectroscopy and AC susceptibility. SEM observations reveal that two types of thermal-induced martensites, e (h.c.p.) and ? (b.c.c.) martensites, form in the austenite grains of the alloy. Mössbauer spectra at room temperature reveal a paramagnetic character with a singlet for the ? (fc.c.) austenite and e martensite phases and a ferromagnetic character with a broad sextet for ? martensite phase. In addition, measurement of the AC susceptibility of the alloy shows that the magnetic transition from the paramagnetic order to magnetic disordered occurs below room temperature at 258 K.
Açıklama
Anahtar Kelimeler
AC susceptibility, Fe-Mn-co Alloy, Magnetic transitions, Martensitic transformations, Mössbauer spectroscopy, Scanning electron mycroscop
Kaynak
Gazi University Journal of Science
WoS Q Değeri
Scopus Q Değeri
Q2
Cilt
25
Sayı
2
