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Mössbauer studies of phase separation in nanocrystalline Fe0.55-xCr0.45Snx alloys prepared by mechanical alloying

Authors: B.F.O. Costa, G. Le Caër and B. Luyssaert

Ref.: Journal of Alloys and Compounds 350, 36-46 (2003)

Abstract: Mossbauer spectrometry (Fe-57 and Sn-119) was used to investigate phase separation in coarse-grained Fe0.55Cr0.45 and in mechanically-alloyed nanocrystalline Fe0.55Cr0.45, Fe-0.52=Cr0.45Sn0.03; and Fe0.49Cr0.45Sn0.06 alloys during isothermal annealing at 748 K. Phase separation occurs faster in nanocrystalline Fe-Cr than in cold-rolled coarse-grained alloys. The effect of the interconnected microstructure on room-temperature hyperfine magnetic field distributions of alloys aged for hundreds of hours is qualitatively discussed. Tin hinders grain growth of nanocrystalline alloys. (C) 2002 Elsevier Science B.V. All rights reserved.

DOI: 10.1016/S0925-8388(02)00954-4