Title: Long-time ball milling of FeCr

Authors: J.M. Loureiro, B.F.O. Costa, G. Le Caer

Addresses: CEMDRX, Physics Department, University of Coimbra, Coimbra, P-3004-516, Portugal. ' CEMDRX, Physics Department, University of Coimbra, Coimbra, P-3004-516, Portugal. ' IPR, UMR URI-CNRS 6251, Universite de Rennes I, Campus de Beaulieu, Bat 11A, Rennes Cedex, F-35042, France

Abstract: Near-equiatomic sigma and alpha phases of the FeCr system were ball-milled in vacuum in a vibratory mill for long times. When milled, the sigma phase first transforms into an alpha phase, which amorphises partially as observed too when milling directly an alpha phase. In the latter case, the amorphisation rate of the alpha phase is about five times smaller than it is when the alpha phase is formed under milling from the sigma phase. In both experiments, the amorphous phase fractions formed during long periods of milling are independent of the rate of amorphisation.

Keywords: FeCr; ferrochrome; alpha phase; sigma phase; ball milling; Mossbauer spectroscopy; amorphisation; vibratory mill; ferritic steels.

DOI: 10.1504/IJNM.2010.029918

International Journal of Nanomanufacturing, 2010 Vol.5 No.1/2, pp.10 - 15

Published online: 03 Dec 2009 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article