2026-04-14T02:07:35Zhttps://recercat.cat/oai/request

oai:recercat.cat:10256/127272024-06-18T11:49:31Zcom_2072_452955com_2072_2054col_2072_453063

00925njm 22002777a 4500 dc Laala-Bouali, H. author Bentayeb, F. Z. author Louidi, S. author Guo, X. author Tria, S. author Suñol Martínez, Joan Josep author Escoda i Acero, Ma. Lluïsa author info:eu-repo/date/embargoEnd/2026-01-01 info:eu-repo/date/embargoEnd/2026-01-01 2013-01-01 This work deals with the microstructural properties of the Fe-30Co alloy prepared by ball milling of elemental iron and cobalt powders. The obtained mixed powder has been characterized by means of scanning electron microscope, X-ray microanalysis, laser diffraction, X-ray diffraction and microhardness measurements. X-ray line profile analysis based on the Rietveld method and adopting two different models has been used for the microstructural study. The refinement of the X-ray patterns shows that after 3 h of high energy milling the Fe(Co) is formed. The obtained Fe(Co) solid solution is characterized by body centered cubic structure with a lattice parameter a = 0.28564 ± 0.00004 nm and an ellipsoidal crystallite and microstrain field. The dissolution of cobalt in iron matrix is accompanied by the compression of the crystalline lattice by 0.37%. The progress of milling process produces an increase of the Debye-Waller factor and the dislocation density leading to the hardening of the powder. The variation of microhardness with milling time shows a change in hardening mechanisms Financial support from MICYT MAT2006-13925-C02-02 (FEDER) and DURSI 2005SGR-00201 projects is acknowledged http://hdl.handle.net/10256/12727 Microscòpia electrònica d'escombratge Scanning electron microscopy Microestructura Microstructure Materials nanoestructurats -- Propietats mecàniques Nanostructured materials -- Mechanical properties Metalls de transició -- Aliatges Transition metals -- Alloys X-ray line profile analysis of the ball-milled Fe-30Co alloy