Title of article
Characterization of nanoscaled heterogeneities in mechanically alloyed and compacted CuFe
Author/Authors
Wanderka، نويسنده , , N. and Czubayko، نويسنده , , U. and Naundorf، نويسنده , , V. M. Ivchenko، نويسنده , , V.A. and Yermakov، نويسنده , , A.Ye. and Uimin، نويسنده , , M.A. and Wollenberger، نويسنده , , H.، نويسنده ,
Pages
6
From page
189
To page
194
Abstract
Cu80Fe20 and Cu50Fe50 were mechanically alloyed from the pure elements by ball milling for 36 h. The alloy powder was compacted into tablets at room temperature by applying a pressure of 5 GPa. Characterization of the Cu80Fe20 and Cu50Fe50 alloys was carried out by high-resolution transmission electron microscopy (HREM), atom probe field ion microscopy and three-dimensional atom probe (3DAP). The grain size of the nanocrystalline microstructure of the ball-milled alloys observed with HREM varies between 3 and 50 nm.Atom probe and 3DAP measurements indicate that the as-prepared state is a highly supersaturated alloy, in which the individual nanocrystals have largely varying composition. Fe concentration in Cu was found to range from about 8 to 50 at%. It is concluded that by ball milling and compacting an alloy is produced which on a nanometer scale is heterogeneous with respect to morphology and composition.
Keywords
Nanocrystalline materials , Cu–Fe , mechanical alloying , HREM , 3DAP
Journal title
Astroparticle Physics
Record number
2051254
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