TITLE

Magnetic Transitions and The Magnetic Characteristics of The Martensitic Transformations in A Fe-Mn-Co Alloy

AUTHOR(S)
Yuksel, Mustafa; Agan, Sedat
PUB. DATE
April 2012
SOURCE
Gazi University Journal of Science;2012, Vol. 25 Issue 2, p323
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
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, ε (h.c.p.) and α' (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 γ (f.c.c.) austenite and ε martensite phases and a ferromagnetic character with a broad sextet for α' 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.
ACCESSION #
79758569

 

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