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Donofrio, L.
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article
Mechanical alloying of FeCoCr
Abstract
<p>The mechanical alloying of Fe-Co-Cr has been studied from the structural point of view by different techniques: XRD, TEM and Mössbauer spectroscopy, following the transformations taking place during milling. The alloys FeCo, Fe<sub>40</sub>Co<sub>50</sub>Cr<sub>10</sub>and Fe<sub>50</sub>Co<sub>40</sub>Cr<sub>10</sub>were prepared by milling of the elemental powders during 1, 2, 5, 10, 20, 40 and 60 h. The kinetics of alloy formation occurs by incorporation of Co and/or Cr in the Fe structure. For the Fe-Co alloy after 10h of milling a mixture of Fe (Co) solid solution and α-Fe is obtained. For the FeCoCr alloys prolonged milling results in Cr incorporation in the FeCo structure and a mixture of Fe (Co) and Fe (Cr) is formed. A grain size in the range of 2-5 nm is reached after 60h of milling. © 2011 Universidad Simón Bolívar (Venezuela).</p>