2026-04-14T02:45:14Zhttps://recercat.cat/oai/request

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

X-ray line profile analysis of the ball-milled Fe-30Co alloy Laala-Bouali, H. Bentayeb, F. Z. Louidi, S. Guo, X. Tria, S. Suñol Martínez, Joan Josep Escoda i Acero, Ma. Lluïsa Microscòpia electrònica d'escombratge Scanning electron microscopy Microestructura Microstructure Materials nanoestructurats -- Propietats mecàniques Nanostructured materials -- Mechanical properties Metalls de transició -- Aliatges Transition metals -- Alloys 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 2024-06-18T11:49:31Z 2024-06-18T11:49:31Z 2024-06-18T11:49:31Z info:eu-repo/date/embargoEnd/2026-01-01 info:eu-repo/date/embargoEnd/2026-01-01 2013-01-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/10256/12727 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.apt.2012.04.007 info:eu-repo/semantics/altIdentifier/issn/0921-8831 info:eu-repo/semantics/altIdentifier/eissn/1568-5527 info:eu-repo/grantAgreement/MEC//MAT2006-13925-C02-02/ES/PROPIEDADES MAGNETICAS Y TERMOELASTICAS DE MATERIALES PARA APLICACIONES EN SENSORES MAGNETOINDUCTIVOS Y EN MEMORIAS MAGNETICAS DE FORMA/ AGAUR/2005-2008/2005 SGR-00201 Tots els drets reservats info:eu-repo/semantics/embargoedAccess Elsevier © Advanced Powder Technology, 2013, vol. 24, núm. 1, p. 168-174 Articles publicats (D-F)