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Journal of the Mexican Chemical Society
versión impresa ISSN 1870-249X
Resumen
CABRAL-PRIETO, Agustín et al. Spectroscopic and Mechanical Studies on the Fe-based Amorphous Alloy 2605SA1. J. Mex. Chem. Soc [online]. 2010, vol.54, n.1, pp.7-17. ISSN 1870-249X.
The Vickers micro-hardness of this alloy was unusually dependent on the heat treatment from 300 to 634K, inferring important micro-structural changes and the presence of amorphous grains before its phase transition. Once the alloy is crystallized, the micro-hardness is characteristic of a brittle alloy, the main problem of these alloys. Within the amorphous state, other properties like free-volume, magnetic states and Fe-Fe distances were followed by PALS and MS, respectively, to analyze those micro-structural changes, thermally induced, which are of paramount interest to understand their brittleness problem.
Palabras llave : Amorphous alloys; Mössbauer spectroscopy; annihilation of positrons; free-volume; defects; micro hardness; brittleness.