The amorphous phase decomposition in Fe-based alloys after severe plastic deformation
|Danila V. Matveev 1, G. E. Abrosimova 1, A. S. Aronin 1, S. V. Dobatkin 2, O. G. Rybchenko 1, E. V. Tatiyanin 2,3, I. I. Zverkova 1|
1. Russian Academy of Sciences, Institute of Solid State Physics, Chernogolovka 142432, Russian Federation
Fe-based amorphous alloys show high magnetic properties. Last years metallic glasses have attracted the interest as precursors for production of nanocrystalline state. Nanocrystalline structure created by primary crystallization of melt-spun amorphous Fe-based ribbons exhibits excellent soft magnetic properties. Small addition of Cu and Nb deteriorate potential properties of nanocrystalline Fe-Si-B alloy. However nanocrystalline structure does not form at the crystallization of Fe-Si-B and Fe-B alloys at heating. Nowadays, formation of nanocrystalline structure was found to occur under severe plastic deformation . Recently we have formed nanocrystalline structure in amorphous Fe81В13Si6 alloy by high pressure torsion at different temperatures. The nanocrystalline structure was found to form at achievement of definite strain. The phase composition, crystal size, morphology and distribution of crystals in the sample depend on a strain and treatment temperature. The minimal size of the obtained crystals is 5-10 nm. In this work we try to form the nanocrystalline structure by high pressure treatment of amorphous Fe80B20 and Fe84B16 alloys.
Presentation: poster at E-MRS Fall Meeting 2005, Symposium I, by Danila V. Matveev
See On-line Journal of E-MRS Fall Meeting 2005
Submitted: 2005-04-26 13:20 Revised: 2009-06-07 00:44
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