Abstract

GONZALEZ, Gema et al. Mechanical alloying of FeCoCr. Rev. LatinAm. Metal. Mater. [online]. 2011, vol.31, n.1, pp.64-70. ISSN 0255-6952.

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, Fe₄₀Co₅₀Cr₁₀ and Fe₅₀Co₄₀Cr₁₀ 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 a-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

Keywords : FeCo; FeCoCr; nanostructured materials; mechanical alloying.