Decomposition process in a FeAuPd alloy nanostructured by severe plastic deformation

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dc.creatorSauvage, Xavier
dc.creatorChbihi, Abdelahad
dc.creatorGunderov, Dmitry
dc.creatorBelozerov, E. V.
dc.creatorPopov, A. G.
dc.date2009-01-09
dc.date.accessioned2026-07-07T12:27:59Z
dc.date.available2026-07-07T12:27:59Z
dc.descriptionThe decomposition process mechanisms have been investigated in a Fe50Au25Pd25 (at.%) alloy processed by severe plastic deformation. Phases were characterized by X-ray diffraction and microstructures were observed using transmission electron microscopy. In the coarse grain alloy homogenized and aged at $450 ^{circ}\mathrm{C}$, the bcc α-Fe and fcc AuPd phases nucleate in the fcc supersaturated solid solution and grow by a discontinuous precipitation process resulting in a typical lamellar structure. The grain size of the homogenized FeAuPd alloy was reduced in a range of 50 to 100nm by high pressure torsion. Aging at $450 ^{circ}\mathrm{C}$ this nanostructure leads to the decomposition of the solid solution into an equi-axed microstructure. The grain growth is very limited during aging and the grain size remains under 100nm. The combination of two phases with different crystallographic structures (bcc α-Fe and fcc AuPd) and of the nanoscaled grain size gives rise to a significant hardening of the alloy
dc.identifierhttps://arxiv.org/abs/0901.1191
dc.identifierhttp://arxiv.org/abs/0901.1191
dc.identifierJournal of Materials Science 43 (2008) 7293-7298
dc.identifierdoi:10.1007/s10853-008-2752-5
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/215397
dc.subjectMaterials Science
dc.titleDecomposition process in a FeAuPd alloy nanostructured by severe plastic deformation
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