A Mössbauer and structural study of disordered alloys Fe3-xTixAl (0 < x < 1)

• Autorzy: Brząkalik K. , Frąckowiak J.
• Konferencja: Proceedings of the All-Polish Seminar on Moessbauer Spectroscopy OSSM'2002, June 9-12, 2002, Goniądz, Poland
• Języki publikacji: EN

Abstrakty

EN

A series of the disordered Fe3-xTixAl (x = 0, 0.2, 0.45, 0.55, 0.65, 0.70, 0.75, 1) alloys obtained by arc-melting were studied. Directly after melting the samples were mechanically crashed and in that form examined by the structural and Mössbauer effect methods. The alloys were strongly disordered, but it was possible to identify, apart from Fe-bcc phase, the origins of forming such phases as Fe2TiAl Heusler phase, Fe3Al with DO3 structure, FeAl and FeTi with B2 structure and non-stechiometric Fe2Ti Laves phase with hexagonal C14 structure. For Ti concentration up to x = 0.45, the disordered Fe-bcc phase dominates. For Ti concentration from x = 0.55 to x = 1, the Fe2TiAl phase coexists with FeAl phase (for x = 0.55, 0.65) and with FeTi phase (x = 0.7 and 0.75). In a sample with the nominal Fe2TiAl composition of Fe2TiAl Heusler phase, a non-stoichiometric Fe2Ti Laves phase with hexagonal C14 structure was observed.

Słowa kluczowe

EN

Fe2TiAl Heusler phase; Fe-Ti-Al system; Mössbauer spectroscopy

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2003
• Tom: Vol. 48,suppl.1
• Strony: 13--16
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Brząkalik K.

• Institute of Physics, University of Silesia, 4 Uniwersytecka Str., 40-007 Katowice, Poland, Tel.: [phone], Fax: [phone]

autor

Frąckowiak J.

• Institute of Physics and Chemistry of Metals, University of Silesia, 4 Uniwersytecka Str., 40-007 Katowice, Poland

Bibliografia

• 1. Frąckowiak JE (1993) Investigation of B2 and DO3 type superstructure by means of Mössbauer effect method. University of Silesia, Katowice (in Polish)
• 2. Galvao da Silva E, Samudio Peres CA, McElfresh M (1994) Magnetization and Mössbauer effect study of the pseudobinary system (Ti1−xNbx)Fe2. J Magn Magn Mater 138:63−75
• 3. Gialanella S, Brusa RS, Deng W, Marino F, Spaterau T, Principi G (2001) Defect structures in FeAl B2 alloys. J Alloys Compd 317:485−490
• 4. Mendiratta MG, Ehlers SK, Lipsitt HA (1987) DO3-B2-α phase relations in Fe-Al-Ti alloys. Metall Trans A 18:509−518
• 5. Ohnuma I, Schön CG, Kainuma R, Inden G, Ishida K (1998) Ordering and phase separation in the bcc phase of the FeAl-Ti system. Acta Mater 46:2083−2094
• 6. Pelloth J, Brand RA, Keune W (1995) Local magnetic properties of the Fe2Ti Laves phase. J Magn Magn Mater 140:59−60
• 7. Prakash U, Sauthoff G (2001) Structure and properties of Fe-Al-Ti intermetallic alloys. Intermetallics 9:107−112
• 8. Wasserman EF, Rellinghaus B, Roessel Th, Pepperhoff W (1998) Relation between structure and magnetism of TixFe100−x alloys within the C14 Laves-phase stability range. J Magn Magn Mater 190:289−301