Nermin KAHVECİ YAĞCI, Hasan İNAÇ

Structural and Magnetic Study of Fe-15,83%Mn-2,18%V and Fe18,50%Mn-2,27%Cu Alloys

In this study, the microstructure and magnetic properties of martensite transformation induced were investigated in Fe based alloys (Fe-15,83%Mn-2,18%V ve Fe-18,50%Mn-2,27%Cu alloys). Micro structures were studied with Scanning Electron Microscope. The effect of the adding V and Cu in Fe-Mn alloy on the magnetic properties has been investigated by Mössbauer spectroscopy technique respectively. It was investigated that the adding of V and Cu to Fe-Mn alloy reveals the ferromagnetic and paramagnetic properties of alloy respectively. The other result of this study is the rate of Mn amount in Fe-Mn-X alloy. If the Mn rate in the Fe-Mn-X alloy is 18% or more, no α-martensitic transformation have been observed. Thus, this study showed that the additional atom has great importance on changing the magnetic properties of alloys.

Keywords:

Phase transformation, Magnetic properties Mössbauer spectroscopy, Scanning electron microscope,

PDF

___

Askeland, D.R., (2003). The Science And Engineering of Materials (4th ed.). Thomson Learning Inc., California.
Cotes, S.M., Cabrera, A.F., Damonte, L.C., Mercader, R.C.,& Desimoni, J. (2002). Phase transformations in Fe-Mn alloys induced by Ball Milling. Hyperfine Interactions 141/142 409-414. doi:10.1023/A:1021204909505.
Cotes, S.M., Cabrera, A.F., Damonte, L.C., Mercader, R.C., & Desimoni, J.(2002). Magnetic properties of ball-milled Fe–Mn alloys. Physica B 320 274–277. doi:10.1016/S0921-4526(02)00711-1.
Cotes, S.M., Guillermet, A.F., & Sade, M. (2004). Fcc/Hcp Martensitic transformation in the Fe-Mn system: Part II. Driving force and thermodynamics of the nucleation process. Metallurgical and Materials Transactions A, 23 83-91. doi:10.1007/s11661-004-0111-y.
Jun, J.H., Kong, D.K., & Choi, C.S. (1998). The influence of Co on damping capacity of Fe–Mn–Co alloys. Materials Research Bulletin Vol. 33, No. 10 1419–1425. doi:10.1016/S0025-5408(98)00145-7.
Kajiwara, S. (1984). Continuous observation of isothermal martensite formation in Fe-Ni-Mn alloys. Acta Metallurgica, 32 407-413. doi:10.1016/0001-6160(84)90114-7.
Marinelli, P., Fernandez Guillernet, A., & Sade, M. (2004). The enthalpy change of the hcp → fcc martensitic transformation in Fe–Mn–Co alloys: composition dependence and thermal cycling effects. Materials Science and Engineering A 373 1–9. doi:10.1016/j.msea.2003.05.006.
Nishiyama, Z. (1978). Martensitic transformations, Academic Press, London.
Porter, D.A., Eeasterling, K.E., & Sherif, M.Y. (2009). Phase Transformations in Metals and Alloys (3.ed.). CRC Press, London, New York.
Sarı, U., Güler, E., Kırındı, T., & Dikici, M.(2009). Characterization of martensite in Fe-25%Ni-15%Co-5%Mo alloy. Journal of Physics and Chemistry of Solid, 70 1226-1229. doi:10.1016/j.jpcs.2009.06.013.
Sarı, U., Kırındı, T., Yüksel, M., & Ağan, S. (2009). Influence of Mo and Co on the magnetic properties and martensitic transformation characteristics of a Fe-Mn alloy. Journal of Alloys and Compounds 476 160–163. doi:10.1016/j.jallcom.2008.09.047.
Sarı, U., & Kırındı, T. (2011). Effect of Mn content on the austenite-martensite phases and magnetic properties in Fe-Mn-Co alloys. Mateterials Chemistry and Physics, 130(2011)738-742. doi:10.1016/j.matchemphys.2011.07.063.
Sumiyama, B.K., Kadono, M., & Nakamura, Y. (1981). Metastable bcc Fe-Mn alloys produced by rf sputtering. Transaction of the Japan Institute of Metals,Vol.22,No.10 686-690. doi:10.2320/matertrans1960.22.686.